keynote speech at the opening ceremony of the Boao Forum for Asia Annual Conference 2022 keynote speech at the Boao Forum for Asia annual conference 2021 习近平携手迎接挑战，合作开创未来：在博鳌亚洲论坛2022年年会开幕式上的主旨演讲：keynote speech at the opening ceremony of the Boao Forum for Asia Annual Conference 2022 keynote speech at the opening ceremony of the first China International Import Expo Xi Jinping important speeches at the Boao forum for asia annual conference 2018