At least 52 people were killed and another 20 were missing in rain-triggered floods in central China's Henan Province, a spokesman with Henan flood control headquarters said Monday. Torrential rains hit the mountainous regions in the west and south part of the province from 23 to 25, resulting in heavy casualties in three cities (Luoyang, Nanyang and Sanmenxia). Among the casualties, 37 killed were from Luoyang City, an ancient capital and home to the World Heritage Site Longmen Grottoes. The magnitude of the loss is being assessed, Xinhua reported.