By Li Yuan People on social media in China and the West can’t stop comparing Alysa Liu and Eileen Gu, two of the biggest stars at the Winter Olympics. It’s hard not to. Both were raised in the Bay Area. Both have a parent from China. Both are sports prodigies. In Milan, Liu, a 20-year-old born in Clovis and raised in the East Bay, became the first American in 24 years to win gold in women’s figure skating, and she added a second gold in the team event. San Francisco native Gu, 22, won one gold and two silvers in freestyle skiing. Gu will be the grand marshal of San Francisco’s Chinese New Year parade tonight, and Liu will be honored in Oakland with her own celebration Thursday at Frank...