A 15-member team of China Central Television (CCT), including producer Lee Ziyang Dong and chief director Kin Tiyenu, is here to shoot rare statues in the Patna Museum.
A major part of the film was shot in Bodh Gaya, the birthplace of Buddhism, and at Nalanda and Rajgrih in February.
The Bodh Gaya shrine in Gaya district is believed to be where the Buddha attained enlightenment more than 2,500 years ago.
"The goal of the film is to popularize in China the Buddhist circuit (in Bihar)," Chinese Ambassador to India Sun Yuxi told IANS.
The envoy said China and India were coming closer and the film was part of a cultural exchange program between the two countries. "People in China are keen to know about the Buddhist circuit," he said.