On Tuesday and Wednesday, the Honghe Meteorological Bureau issued warnings for severe high temperatures, with the peak temperature passing 38 C.
Last year, the herd of wandering wild Asian elephants, which numbered 16 at the time, left its forest habitat in the Xishuangbanna Dai autonomous prefecture and headed north.
During the trip, an elephant calf was born, and two elephants returned to their habitat in April.
Another male elephant, which broke away from the herd, was captured and sent back to its forest home in Xishuangbanna on June 7. The rest continue to migrate.