Singapore, Jan. 18 -- This year, three Asean member states - Indonesia, Myanmar and Vietnam - will mark 70 years of diplomatic ties with China. That Chinese President Xi Jinping chose Myanmar first to celebrate the occasion says much about what is at stake in bilateral relations. It is also a reflection of the state of play of Chinese relations with key countries in South-east Asia. Given their history, China and Vietnam can best be described as frenemies. Beijing's ties with Jakarta have hit a rough patch of late over maritime rights. Myanmar, however, offers many open doors for a China looking for closer ties in a region increasingly wary of its growing economic and political clout. There are mutual benefits for both as Mr Xi arrived yest...