三件大事

Three major tasks

即精心组织实施北京城市总体规划，以疏解北京非首都功能为牛鼻子推动京津冀协同发展，全力筹办好2022年北京冬奥会冬残奥会。

These refer to implementing the Master Plan of Development for Beijing (2016-2035), advancing the coordinated development of the Beijing-Tianjin-Hebei region through relocation of functions non-essential to Beijing's role as the capital city, and making thorough preparations for the 2022 Olympic and Paralympic Winter Games.