Beijing : At least 37 people have died and six others remain missing after heavy rains, the type that occur once every 100 years, lashed several provinces in southern China. The incessant downpour have led to swollen rivers and floods in mountainous areas. A large number of houses have collapsed and farms submerged, the China National Commission for Disaster Reduction said today. In Guangdong Province, the death toll from the deadly flood rose to 17 while three others were listed missing. The rainstorms also hit Hunan, Guizhou, Jiangxi and five other southern provinces.