Representatives attend the closing ceremony of the second meeting of Myanmar's 21st Century Panglong Peace Conference in Nay Pyi Taw, Myanmar, May 29, 2017. Myanmar's 21st Century Panglong Peace Conference on Monday incorporated 37 adopted principles under four sectors into the union agreement in Nay Pyi Taw, the last day of the six-day conference. (Xinhua/U Aung)