“The U.S. naval blockade has prevented Iranian oil from flowing to China, the biggest buyer of Iranian oil, and estimated that there were only 15 million barrels currently at sea, he said.”

Iran Still Awaits ‘Official’ U.S. Response Despite Trump’s Rebuff of Cease-Fire Offer

“But China’s willingness to keep trading with Iran gives the regime an economic lifeline. Before the blockade, China purchased 90 percent of Iran’s oil exports and hosted much of Iran’s financial deposits in Chinese banks.”

Trump Unleashed: How the U.S. president might escalate against Iran after the midterm elections.

“Iran relies on China to buy its exported oil.”

Anything Could Happen in Iran

“Externally, Iran survives through Chinese oil imports, which blunt the impact of Western sanctions.”

Europe’s snapback gamble on Iran