{"id":136,"date":"2026-05-11T10:33:58","date_gmt":"2026-05-11T10:33:58","guid":{"rendered":"https:\/\/hormuztoll.com\/news\/?p=136"},"modified":"2026-05-11T10:33:58","modified_gmt":"2026-05-11T10:33:58","slug":"china-blocking-rules","status":"publish","type":"post","link":"https:\/\/hormuztoll.com\/news\/2026\/05\/11\/china-blocking-rules\/","title":{"rendered":"China’s May 2 Blocking Rules Order: The Buyer Leg Hardens"},"content":{"rendered":"

On 2 May 2026, China’s Ministry of Commerce issued a formal prohibition order under the 2021 Rules on Counteracting Unjustified Extraterritorial Application of Foreign Legislation and Other Measures \u2014 commonly referred to as China’s Blocking Rules. The order bars the recognition, enforcement, or compliance inside China with United States sanctions imposed on five Chinese refineries accused of buying Iranian crude oil. The five named refineries are Hengli Petrochemical (Dalian) Refinery (the subject of this site’s 25 April analysis of the four-leg toll architecture<\/a>), Shandong Jincheng Petrochemical Group, Hebei Xinhai Chemical Group, Shouguang Luqing Petrochemical, and Shandong Shengxing Chemical.<\/p>\n

This is the first time China has formally invoked the Blocking Rules since their adoption in 2021. Coverage in Asia Times, Middle East Monitor, Al Jazeera, Bloomberg, and Vision Times treats the action as a step-change in the legal-system character of the United States-China economic dispute over the Iranian oil channel, rather than as a continuation of the prior diplomatic-protest posture. The action specifically targets the buyer-leg of the four-leg toll architecture that the Hengli post<\/a> documented. This post reads what the action does at the architecture level and what it implies for the institutional answer the site has been arguing for.<\/p>\n

What the Blocking Rules do<\/h2>\n

The 2021 Rules permit the Chinese Ministry of Commerce to designate specific foreign sanctions or extraterritorial legal measures as “unjustified,” after which Chinese persons and entities are prohibited from complying with the designated measures. The Rules also authorise Chinese persons damaged by compliance-with-the-foreign-measure by counterparties to seek damages in Chinese courts, create a counter-sanctions list, and provide a procedural framework for the Ministry to manage exemptions on a case-by-case basis. The Rules are modelled in significant part on the European Union’s Blocking Statute (Council Regulation No. 2271\/96) and on similar national blocking instruments elsewhere.<\/p>\n

The 2 May prohibition order activates the Rules specifically for the five named refineries. The effect, inside the People’s Republic of China, is that the affected Chinese entities cannot lawfully comply with the United States Office of Foreign Assets Control designations of those refineries. The Chinese banking system, the Chinese commodities exchanges, the Chinese ports, and the Chinese logistics infrastructure are required, by Chinese law, to continue transacting with the designated refineries as if the OFAC designations did not exist.<\/p>\n

Outside the People’s Republic of China, the order has no direct legal effect. The United States banking system, the major non-Chinese commodities exchanges, the non-Chinese ports and logistics infrastructure, and the global insurance and reinsurance markets continue to operate under the OFAC designations as the applicable compliance regime. The result is a bifurcated transaction environment in which the same Chinese refinery is, simultaneously, a lawful counterparty inside China and a designated party outside China.<\/p>\n

What this does to the four-leg architecture<\/h2>\n

The 25 April Hengli post<\/a> set out the four-leg toll architecture in which the Iranian transit-fee arrangement was operating as of late April: a vessel\/operator leg, a payment channel leg (Tether and other stablecoin or shadow banking arrangements), a treasury leg (Iranian sovereign and IRGC-affiliated treasury holdings), and a buyer leg (the Chinese teapot refinery sector, with Hengli the largest single named example). The Hengli sanction was an OFAC action targeting the buyer leg specifically. The Tether wallet freeze of 24 April, analysed in the stablecoin settlement post<\/a>, was a parallel action targeting the channel leg. The two actions, taken together, were the United States compliance posture closing the buyer and channel legs to the extent that the OFAC designations could reach them through global infrastructure dependent on the United States dollar system.<\/p>\n

The 2 May Blocking Rules order is the Chinese state’s structural response to that closure on the buyer leg. The order does not, as a matter of Chinese law, contest the United States right to designate the refineries. It contests the legal effect of those designations on operations conducted inside China. The effect is to harden the buyer leg of the architecture against further OFAC erosion by removing one of the two compliance pressures that an OFAC designation produces \u2014 the domestic-compliance pressure inside the designated entity’s home jurisdiction. The other compliance pressure \u2014 the global-banking-system pressure outside the home jurisdiction \u2014 remains in full force.<\/p>\n

The architecture, after the 2 May order, is therefore: a vessel\/operator leg that is partially closed by the United States blockade and Project Freedom; a channel leg that is partially closed by the Tether and OFAC actions on stablecoin and shadow banking arrangements; a treasury leg that is partially closed by the Iranian asset freeze and sanctions framework; and a buyer leg that is bifurcated, with the inside-China portion hardened against compliance pressure and the outside-China portion fully under OFAC compliance. The four-leg architecture has not become a five-leg architecture. The buyer leg has become bilateral, with different operating rules on each side of the United States-China legal-system boundary.<\/p>\n

What the order does not change<\/h2>\n

It is worth being precise about what the Blocking Rules order does not change. The order does not reopen the Strait of Hormuz to commercial traffic. The order does not provide a payment channel through which non-Chinese counterparties can pay Iranian transit fees in dollars or other convertible currencies. The order does not provide a payment channel through which Chinese refineries can pay for Iranian crude in dollars or other convertible currencies \u2014 those flows remain subject to the same OFAC and international-banking compliance pressures they faced before the order. The order does not provide an institutional administering body for the chokepoint. The order does not differentiate transit on the equal-access basis the operator class as represented in the 25 April ICS statement<\/a> has indicated is required.<\/p>\n

The order is, in institutional terms, a defensive legal measure on one leg of one side of the four-leg architecture. It is not an institutional configuration for the chokepoint. It does not move the chokepoint problem closer to resolution; it makes one leg of one of the parallel arrangements operating around the chokepoint more durable against compliance pressure.<\/p>\n

The implication for the negotiating geometry<\/h2>\n

The 15-versus-14 geometry post<\/a> read the gap between the United States ask for chokepoint “reopening” and the Iranian ask for a “new mechanism.” The 2 May Blocking Rules order adds a third party to the geometry. China is not, in the formal sense, a party to either of the bilateral proposals being mediated through Pakistan. China is, in the practical sense, the dominant buyer of Iranian crude and therefore one of the principal counterparties whose behaviour determines whether any reopening or any new mechanism actually works in operation. The Blocking Rules order is China’s signal to both sides of the bilateral negotiation that the buyer leg the United States is trying to close cannot, as a matter of Chinese law, be closed by the means the United States is currently using.<\/p>\n

For the Iranian side, the Blocking Rules order is, in effect, structural support for the operational status quo. The teapot refineries, on the present trajectory, remain available as buyers regardless of the bilateral negotiation outcome. For the United States side, the order shifts the marginal cost of continuing the sanctions-and-compliance posture upward, because the posture has to operate without Chinese cooperation on its primary target market. For the operator class outside China, nothing changes; the OFAC designations remain in force and the dollar-system compliance pressure remains as it was.<\/p>\n

The institutional answer the site has been arguing for \u2014 a treaty-backed Hormuz transit authority on the Suez or Panama model \u2014 has a specific relationship to the buyer-leg question that the Blocking Rules order makes sharper. A working chokepoint authority does not regulate the buyer side. It regulates the transit side. The Suez Canal Authority does not differentiate between vessels by the identity of the cargo’s ultimate buyer; it differentiates by vessel type, tonnage, cargo, and laden condition, on equal commercial terms across flag-states. The Panama Canal Authority does the same. A Hormuz authority on the same model would price a transit without reference to whether the cargo is destined for Hengli or any other buyer. The buyer-side compliance question would, in that configuration, be left to the United States compliance system to address through its own channels, with no chokepoint-level dependency on whether the United States and China agree on the substance.<\/p>\n

This is, structurally, the strongest case the site can make for the institutional answer in the present configuration. The Blocking Rules order is not a problem for a working chokepoint authority; it is a clarification of what one of the principal counterparties wants the institutional design to leave alone. A treaty-backed authority that prices transit on a vessel-and-cargo basis without reference to buyer identity meets that clarification by design. The authority can coexist with both the United States compliance posture on the buyer side and the Chinese Blocking Rules posture on the buyer side, because the authority does not regulate the buyer side at all. The comparison page<\/a> sets out the institutional arithmetic. The rate schedule<\/a> is the equal-access tariff the arithmetic produces. The calculator<\/a> prices a transit against it.<\/p>\n

Sources: Bloomberg, “Beijing Tells China Firms to Ignore US Sanctions on Refiners,” 2 May 2026; Asia Times, “China invokes rules to blunt US sanctions on ‘teapot’ refiners,” May 2026; Asia Times, “China defends firms as US sanctions Hengli over Iran oil,” April 2026; Al Jazeera, “What is China’s anti-sanctions law and how does it work?” 7 May 2026; Middle East Monitor, “China’s Legal Shield Against U.S. Sanctions on Iranian Oil,” May 2026; Vision Times, “US Treasury Sanctions Major Chinese Oil Refinery and 40 Shipping Firms Tied to Iran’s Shadow Fleet,” 1 May 2026; United States Department of the Treasury Office of Foreign Assets Control press release on Hengli and shadow fleet designations; this site’s prior analyses on the Hengli buyer-leg (25 April), the Tether stablecoin settlement post (25 April), the ICS statement (25 April), the cost stack (23 April), the Treasury position (30 April), the new-chapter framework (30 April), the 14-point mechanism language (4 May), and the 15-vs-14 geometry (4 May).<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

On 2 May 2026, China’s Ministry of Commerce issued the first formal prohibition order under the 2021 Blocking Rules, barring compliance inside China with US sanctions on five Chinese refineries buying Iranian crude. The order hardens the buyer leg of the four-leg toll architecture against further OFAC erosion. This post reads what changes, what doesn’t, and why a treaty-backed transit authority can coexist with the bifurcated buyer-side legal environment by design.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"pagelayer_contact_templates":[],"_pagelayer_content":"","footnotes":""},"categories":[2,166,3],"tags":[5,249,31,254,250,209,152,177,251,4,67,253,252],"class_list":["post-136","post","type-post","status-publish","format-standard","hentry","category-analysis","category-governance","category-toll-system","tag-2026-crisis","tag-blocking-rules","tag-china","tag-four-leg-architecture","tag-hengli","tag-iran-sanctions","tag-ofac","tag-panama-canal-authority","tag-shandong-jincheng","tag-strait-of-hormuz","tag-suez-canal-authority","tag-teapot-refineries","tag-treasury"],"_links":{"self":[{"href":"https:\/\/hormuztoll.com\/news\/wp-json\/wp\/v2\/posts\/136","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hormuztoll.com\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hormuztoll.com\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hormuztoll.com\/news\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hormuztoll.com\/news\/wp-json\/wp\/v2\/comments?post=136"}],"version-history":[{"count":1,"href":"https:\/\/hormuztoll.com\/news\/wp-json\/wp\/v2\/posts\/136\/revisions"}],"predecessor-version":[{"id":137,"href":"https:\/\/hormuztoll.com\/news\/wp-json\/wp\/v2\/posts\/136\/revisions\/137"}],"wp:attachment":[{"href":"https:\/\/hormuztoll.com\/news\/wp-json\/wp\/v2\/media?parent=136"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hormuztoll.com\/news\/wp-json\/wp\/v2\/categories?post=136"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hormuztoll.com\/news\/wp-json\/wp\/v2\/tags?post=136"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}