The Dragon Pearl

Professor Xu and Liu Tong are ordered to protect the tomb. While spying on the grave robber Lu Dao Cheng, they accidentally befriend Su Yue Hong, Lu's daughter-in-law. At the same time, they discover traces of Japanese tomb robbers. Faced with the two forces, Liu Tong and Professor Xu struggle to protect the tomb with the help of Su Yue Hong.
(Source: TMDb)