Weather forecasters say strong rains will sweep the quake zone in Yunnan Province, increasing the risk of more flooding and landslides.
Rescuers are still rushing to drain a barrier lake, formed by landslides and debris after the 6.8-magnitude earthquake last week.
Meantime, rescuers have built a temporary helicopter landing site in the worst-hit Qiaojia County.
Local farmer Dai Hongxiang cut down all of his crops to provide space for the landing site.
"If people cannot live anymore, is there any meaning to have these crops? We have to ensure people's lives first, and only then the crops will be useful."
As all damaged roads in the quake zone have reopened, more relief materials are arriving in places
