It is of great significance to construct the Lancang - Mekong community of common destiny, which is conducive to enhancing China's international image, increasing the trust between countries along the two rivers, and improving the overall level of cooperation between China and ASEAN. There are favorable opportunities for the construction of the community at present. China supports the expansion of I_an - Mei cooperation in the context of "One Belt and One Road" ; the will is strong of the five countries along the Mekong River to cooperate wi...