Invited by Nguyen Phu Trong, the General Secretary of the Central Committee of the Communist Party of Vietnam, Trn i Quang, the Chairman of the Socialist Republic of Vietnam, and Boungnang, the General Secretary of the Central Committee of the Lao People's Revolutionary Party and Chairman of the Lao People's Democratic Republic,
应越南共产党中央委员会总书记阮富仲、越南社会主义共和国主席陈大光、老挝人民革命党中央委员会总书记、老挝人民民主共和国主席本扬邀请。