In recent years，the Southern Common Market （its Spanish acronym is Mercosur） continued to hold government summits regularly to promote its integration process. In June 2012，after the suspension of Paraguay’s membership，Venezuela gained full membership，which represents the accomplishment of seven years of entering procession. In December 2012，Bolivia was approved to join it，but its full membership requires the approval of the national congress of each member country. The 2013 Mercosur Summit condemned the U.S. surveillance on South American countries and decided to accelerate free trade negotiations with the EU. In 2012，Chinese Premier Wen Jiabao’s visit enhanced China’s relations with Mercosur，who proposed to double bilateral trade by 2015.