A 5.7 earthquake struck an area near Panzhihua City in southwest China yesterday, killing at least 22 people and destroying 1,000 homes in Sichuan and Yunnan provinces, reports the Los Angeles Times. Rescue teams were racing to the area to help at least 126 injured. Heavy rains and difficult terrain were delaying relief efforts, officials said. Some 70,000 people were killed in Sichuan province when a massive earthquake struck in May. (More China stories.)