HONG KONG, Dec 20 (Reuters) - Hong Kong leader Carrie Lam will visit Beijing on Dec. 20-23 to brief Chinese leaders on the latest economic, social and political situation in the city, the government said on Monday. Her trip comes after pro-Beijing candidates swept to victory in an overhauled "patriots"-only legislative election on Sunday, which saw a record low turnout amid a Beijing crackdown on dissent in the global financial hub. read more