By Yew Lun Tian BEIJING (Reuters) – As U.S. President Joe Biden prepares to host more than 100 participants in the initial “Summit for Democracy”, China – which was not invited – has increasingly talked up the advantages of its own “whole-process democracy”. Chinese state media and diplomats in recent weeks have ramped up criticism of democracy in the United States, touting what they describe as preferable outcomes in its system of “socialist democracy with Chinese characteristics” on measures ranging from COVID-19 management to social mobility. Communist Party-ruled China, widely considered t…