Plenums are major annual meetings held by the CCP. They set the agenda and lay out policies for the coming year. This year's is especially important because 2022 is when the next party congress, which only happen every five years, takes place. During the congress, officials are almost sure to grant President Xi Jinping an unprecedented third term. (In recent decades, top leaders have held power for only two terms. Xi's term should be up next year.)