Wu Bangguo(C, front), chairman of the Standing Committee of China's National People's Congress, arrives in Tehran, Iran, on Sept. 9, 2012 for a four-day official goodwill visit to Iran. (Xinhua/Liu Weibing)

    TEHRAN, Sept. 9 (Xinhua) -- Wu Bangguo, chairman of the Standing Committee of the National People's Congress, arrived in Tehran on Sunday afternoon for a four-day official goodwill visit to Iran.