BEIJING — More than 120 people were buried by a landslide that caused huge rocks and a mass of earth to come crashing into their homes in a mountain village in southwestern China early Saturday, officials said. The landslide, which came from a mountain, engulfed a cluster of 62 homes and a hotel in the village of Xinmo in Mao County at about 6 a.m., the Sichuan provincial government said.