Last Wednesday, the bureau received a call from a villager saying that he wanted to free a monkey he raised.
"We went to his home and found an Assam macaque, a protected animal, but the villager did not seem to be aware of that,"Wang Xinwen, a member of bureau staff said.
The macaque is about 15 years old and weighs 30 kg, Wang said.
There are only about 8,000 Assam macaques in China.
Over the years, he built a deep connection with the macaque but when the animal became agitated this spring, Cha decided he wanted him to return to the forest to find a mate.