Passage Rights

Why the selective blockade is Beijing's most uncomfortable gift

The war did not present Beijing with a decision so much as a bill. The standard outside reading misses this. The first version holds that Beijing failed Iran, that 结伴不结盟 (jiébàn bù jiéméng) or "partners, not alliances," turned out to mean abandonment. The second holds that China played it cleverly, preserving equidistance while others burned. Both assume that China was choosing its exposure level. The more uncomfortable truth is that it had already chosen, incrementally, across a decade of commercial accumulation.

When the Foreign Ministry condemned the U.S.-Israeli strike on Iran on March 11, it was careful to add that China "不认同对海湾国家的攻击" (bù rèntóng duì hǎiwān guójiā de gōngjī), that opposition to the attack on Iran did not extend to endorsement of Iranian escalation against the Gulf monarchies.

Wang Yi then supplied the formal architecture: five principles, admirably tidy, culminating in the injunction that major powers should "发挥建设性作用，善意运用实力" (fāhuī jiànshèxìng zuòyòng, shànyì yùnyòng shílì). A Guancha rebuttal dismissed foreign claims that China had abandoned Iran as a category error, an imposition of Cold War alliance logic onto a policy of deliberate non-alliance. A People's Daily-line commentary was blunter, calling talk of "中国对盟友见死不救" (zhōngguó duì méngyǒu jiànsǐ bù jiù), the failure of China to assist its allies, an attempt to shift crisis management responsibility towards Beijing.

Rather than dishonest, these responses are the kind of elaboration that doctrines require when events have stopped confirming them. Really, the five principles mark the attempts of a government trying to define its obligations downward just as events push them upward. 结伴不结盟 promised intimacy without obligation, access without entrapment. What the selective blockade delivered was something the doctrine had no vocabulary for.

Liu Zhongmin of the Shanghai International Studies University Middle East Institute reported, on the basis of information from a Shanghai shipping firm, that Iran was "有选择地放行部分船只" (yǒu xuǎnzé de fàngxíng bùfen chuánzhī), or selectively permitting certain vessels to pass. Tehran's position was that restrictions applied to ships of the United States, Israel, Europe and their allies. Liu read this as a signal of Iranian friendliness toward China and evidence that the closure was limited rather than absolute.

This is the most uncomfortable development in the entire crisis and it has received far less attention than the Hormuz transit figures.

Neutrality is a performance that requires a neutral stage. Once Iran begins sorting vessels by political alignment — and Chinese ships are among the spared — Beijing becomes implicated in forms of coercion it has declined to endorse. It cannot acknowledge the advantage without validating the blockade's logic. And it cannot deny the advantage without straining the credibility of the shipping firms that know perfectly well what is happening.

结伴不结盟 was designed to refuse obligations, yet the selective blockade has produced entrapment through favor rather than through obligation. China inherits the political meaning of Iranian coercion without having consented to it; without being able to disclaim it cleanly, and without any mechanism to return the gift. Public distancing, formal refusal or silence: none of the available responses dissolves the problem, which is what makes it a trap rather than a minor annoyance.

China's commercial exposure makes the position harder still. Though Beijing has opposed the sanctions regime in principle, a large slice of its refining sector has benefited from it in practice.

Despite their absence on Caixin graphs and other mainstream media, calculations on Zhihu estimated Iranian crude imports at roughly 1.4 million barrels per day, around 13-14% of China's total oil imports, and described them as the principal feedstock source for China's independent refiners — the 茶壶炼厂 (cháhú liànchǎng), teapot refineries, smaller operators whose business model depends on the price discount that attaches to sanctioned oil. Beijing is therefore commercially exposed to Iran due to the accumulation of firms that optimized for the cheapest available inputs, which happened to be Iranian as its pariah status kept prices down.

Oil is the headline commodity but methanol is where the disruption enters the factory gate. Iran is China's largest single foreign source of methanol, accounting for 50–60% of total methanol imports in 2025. The coastal methanol-to-olefins plants concentrated in East and South China — processing units whose entire operating logic depends on cheap feedstock moving reliably through Hormuz — face a specific sequence of harm: shipping delay becomes feedstock shortage, feedstock shortage becomes idle capacity, idle capacity becomes a question about whether the plant survives its contracts.

Meanwhile, a "reassurance camp" exists and its arguments are not empty. Chen Fengying, former director of world economy research at CICIR, assessed the direct shock to China as "总体可控" (zǒngtǐ kěkòng), broadly manageable. Strategic and commercial reserves estimated (Beijing does not disclose such information so it has to be guessed at via budgetary assumptions) at 1.3–1.6 billion barrels cover several months of demand. Scholars at the SIIS March 8 roundtable noted that Gulf states' basic stockpiles ran to roughly a fortnight. By that measure China is better positioned those in the firing line. Liu Zhongmin's reading belongs here too. On his interpretation, Chinese ships move because Iran wants to signal restraint to Washington, not because Tehran has chosen sides. Beijing is incidental to a message directed elsewhere.

The problem is that events kept moving while analysts were still drafting reassurances. Land-based pipelines from Russia and Kazakhstan provide some substitution — real, but capped at under 7% of China's crude imports even at full throughput, with the ESPO spur already running at contractual capacity. By March 13, reports had emerged that Iran was considering a further condition: passage rights tied to yuan-settled cargoes. Chinese analysts reacted with visible discomfort including operational feasibility concerns, security risks and a strain on China-US ties. The discomfort is the data. A country that greets a geopolitical gift with anxiety rather than gratitude has understood something its public statements cannot acknowledge: that the gift is also a claim.

Whatever Iran's motive, it matters less than the structural position it creates for Beijing. Tehran has now proposed to sort the world's shipping not just by flag but by currency, and the currency it proposes to favour is the yuan. Declining that arrangement is not straightforwardly available to a government that has spent years promoting that currency's internationalisation in energy markets. Yet accepting it embeds China still further in the blockade's logic. The reassurance camp was right that the direct shock was manageable but had no answer for the ominous shape of the favours.

The lawyers had already priced what the analysts were still debating. A Chinese legal advisory circulating among firms with Middle Eastern exposure notes that 45% of China's imported oil transits Hormuz and describes war-risk insurance as the "安全垫" (ānquán diàn) — the safety cushion — of the energy trade, before observing that many Chinese SMEs still treat cargo insurance as an avoidable luxury until war teaches them otherwise. Its sharpest phrase is that supply-chain optimisation is no longer optional tinkering but a "生存级" (shēngcún jí) survival-grade move: existential in the sense that it determines whether contracts can be executed and if firms can survive them. Grand strategy speaks in systems. Lawyers and shippers speak in defaults, clauses and unpaid bills. An uptick in the latter is usually the first sign that the former is faltering.

结伴不结盟 as a doctrine remains coherent as an account of what Beijing would like the region to permit: close enough to everyone to trade with all, distant enough from everyone to avoid alliance obligations, and respectable enough to speak the language of order while others supply the force behind it. The condition under which the doctrine works is a world of managed friction rather than selective coercion. Managed friction is navigable; you can be equidistant from parties who are fighting each other. When one of your partners begins sorting the world's shipping by political alignment and places you in the favoured column, however, equidistance collapses not because you chose a side but because a side chose you. Meaning China is trapped less by what Iran demands than what it spares.