Chef Zhang Xuesi lowered the fire on the stove where he was cooking his Cantonese meal. He added all the necessary foods, including the seafood, shrimp. He quickly lowered the fire and turned toward a phone camera as hundreds of people watched him online. “It ruins the dish if you burn the breadcrumbs,” he advised his livestream video watchers. Many people in China are restricted to their homes in the effort to stop the spread of coronavirus. Millions of them are finding a new interest in cooking. People watching television and online cooking shows are learning how to make Chinese and Western foods.