Welcome to Foreign Policy ’s China Brief. The highlights this week: The Chinese Communist Party announces new rules for local officials , the Trump-Xi summit is postponed until May, and Beijing introduces a de facto drone ban . Xi’s Bureaucratic Catch-22 Last Friday, the Politburo of the Chinese Communist Party (CCP) issued two mandates for officials . They must first “resolutely uphold the authority and centralized, unified leadership of the Central Committee [of the CCP] with Comrade Xi