改革开放以来,中国改变了外交政策中的极左指导思想,着力改善与周边国家的关系,并注重经济合作以及交往中的互利互惠原则。 Since the reform and opening up, China has changed its ultra-leftist guiding ideology in foreign policy and has done its utmost to improve its relations with neighboring countries. China has also placed emphasis on economic cooperation and the principle of mutual benefit and reciprocity in exchanges.