Updated

China's move to scrap term limits and allow Xi Jinping to serve as president indefinitely puts him on track to deal with some of the country's weightiest long-term sovereignty challenges, especially the fates of Hong Kong and Taiwan.

Some believe Xi views Taiwan and Hong Kong as equally important to cementing his authority.

Hong Kong offers a delicate initial test. Since passing from British to Chinese rule in 1997, the financial hub has operated as a "special administrative region," retaining its own legal and economic system and enjoying a considerable degree of autonomy from Beijing.

Self-governing Taiwan, meanwhile, poses a direct challenge to the Communist Party's claim as the representative of all Chinese and guardian of Chinese sovereignty, independence and territorial integrity.