Iran's oil sales have surged despite US sanctions, with China emerging as its main buyer, purchasing nearly all of Iran's crude oil. A decade ago, China bought only 30% of Iran's oil, but this figure has now risen significantly. Small independent Chinese refineries, known as 'teapots', have stepped in to absorb Iranian oil, operating largely in yuan to avoid US financial pressure. The Bank of Kunlun, sanctioned by the US in 2012, has become a pivotal player in facilitating these transactions, handling a significant portion of Iran's oil revenue. Iran has also established a network of front companies in Hong Kong to convert yuan earnings into usable currencies, allowing it to navigate around sanctions. Despite the challenges, Iran's oil exports have rebounded, with estimates suggesting it exported over one million barrels per day by late 2022, primarily to China. Additionally, barter arrangements have allowed Chinese firms to pay for oil through infrastructure projects in Iran, amounting to $8.4 billion in 2024. This partnership not only supports Iran's economy but also complicates the US's strategy in the region.