About Lantian: Lantian is situated in Shaanxi province on the northern side of the Qin Mountains, close to the provincial capital Xi'an. In ancient times it was renowned for its jade. The fossilized remains of a Homo erectus skull were found here, which provided valuable evidence for research into human evolution. The Chinese film White Deer Plain (based on the eponymous novel) was also filmed here. Tourists can visit the filming location and learn about the area's history. Other popular attractions include Tangyu Bishuiwam Hot Spring Resort and a memorial to the Han dynasty poet and musician Cai Yan.