Prospects for energy cooperation between China and Portuguese-speaking countries Report on energy cooperation between China and southeast Asian 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 并列题名：Report on energy cooperation between China and southeast Asian countries 并列题名：Annual report on the development of cooperation between China and Portuguese-speaking countries 并列题名：Annual report on the development of cooperation between China and portuguese-speaking countries 2020 Annual report on the development of economic and trade cooperation between China and portuguese-speaking countries economic cooperation between China and the neighboring countries Comparison of custom between China and English-speaking countries