I have always been curious why many people consider Iran as China's "ironclad ally". From public information, after the Iran nuclear deal was reached in 2016, China was the first country to visit Iran, and China invited Iran to participate in cooperation under the framework of the Belt and Road Initiative, which showed great importance at that time. However, when Western countries signaled cooperation with Iran after the nuclear deal, Iran did not want to advance cooperation projects with China. In 2021, China and Iran signed a comprehensive cooperation plan. It is reported that there were certain concerns about Chinese investment within Iran. In terms of energy cooperation, China was once an important importer of Iranian oil, but after the Russia-Ukraine conflict in 2022, the international energy landscape changed, and energy cooperation between Russia and China deepened, which reduced Iran's importance to China. During the visit of the Iranian delegation to China in 2024, the Iranian Chief of Staff mentioned in a media interview that "Iran does not need foreign weapons", which also reflects that Iran does not intend to purchase Chinese military equipment in the field of national defense. There is also a sentiment among the Iranian public that they do not favor China. I have seen many Iranians on the Internet expressing distrust in Chinese military and industrial products. In comprehensive terms, there is cooperation based on common interests between China and Iran, but the development of bilateral relations has been influenced by multiple factors such as the international environment and domestic policies. Iran is of important geopolitical position, and China has a developed industry. China needs Iran, and Iran also needs China. However, the cooperation between China and Iran has not always been smooth, and it cannot be regarded as a complete "alliance" relationship.