Study on the people-to-people ties between China and the five Mekong countries 并列题名：Study on the people-to-people ties between China and the five Mekong countries Study on the relationship between China and southeast Asian countries Economic cooperation between China and the neighboring countries People-to-people exchange between China and its neighboring countries economic cooperation between China and the neighboring countries 并列题名：People-to-people exchange between China and its neighboring countries Annual report on the development of cooperation between China and Portuguese-speaking countries Annual report on the development of cooperation between China and portuguese-speaking countries Study on countermeasures of energy cooperation between China and Central Asian countries