The elephant herd returns to their traditional habitat on Aug. 12 along their northerly migratory trek on the tenth “World Elephant Day”. (Photo/Wang Chengji, Dao Qiongfen, Wei Daliang)

Wild Asian elephants pass through a field against the backdrop of a setting sun. (People/Li Xingyu)

Photo shows the Asian elephants wondering on their northerly route. (Photo courtesy of Yunnan Forest Fire Brigade)

Photo shows one elephant casting dust into the air. (Photo/Hu Yanhui)

One giant elephant helps a baby elephant to cross the river. (Photo courtesy of Yunnan Forest Fire Brigade)

Photo shows a male elephant that leaves the herd lying on the ground. (Photo courtesy of Yunnan Forest Fire Brigade)

The wild elephants resting during the daytime. (Photo courtesy of Yunnan Forest Fire Brigade)

A baby elephant sleeping beside its mother. (Photo courtesy of the public security bureau in Yuxi, Yunnan province)

Two wild elephants find food in a farm field. (Photo/Chen Yang)

Photo shows two wild elephants playing with each other. (Photo courtesy of Yunnan Forest Fire Brigade)

Photo shows one of the wild Asian elephants. (Photo/Li Xingyu)

Photo shows the herd of wild Asian elephants wondering along their migratory route. (Photo courtesy of Yunnan Forest Fire Brigade)

The herd of wild Asian elephants crosses the Yuanjiang River. (Photo/People's Daily Online)

The herd of wild Asian elephants plays in the muddy river. (Photo/Li Xingyu)

Photo shows the herd of wild Asian elephants. (Photo courtesy of Yunnan Forest Fire Brigade)

Photo shows the herd of wild Asian elephants crossing a muddy path of ground. (Photo courtesy of Yunnan Forest Fire Brigade)

Two female elephants fight with each other while a male tries to make peace. (Photo courtesy of Yunnan Forest Fire Brigade)