TAIPEI, Taiwan — Two American-born athletes competing for China. Two radically different reactions from Chinese social media to their performances at the Winter Olympics . As freestyle skier Eileen Gu won her gold medal in the big air competition on Tuesday, praise for the San Franciscan quite literally overwhelmed the Chinese internet. Sina Weibo, the massive social network that is similar to Twitter, found its servers temporarily overloaded, according to Chinese media. Of the top 10 trending topics on the platform, five were dedicated to adoration for the 18-year-old champion. “Gu Ailing is a genius young woman right?” was one...