Fang Kun, a graduate student in the Department of Archeology at Qinchuan University, assisted in the search for cultural relics lost overseas and discovered that an unknown tomb in the hidden village of Changle might be the tomb of Emperor Yong'an.His mentor Zan Maochang took him to Changle for field investigation, but he accidentally lost his life.Fang Kun took his mentor's wish and volunteered to go to Tibet to support archeology in Tibetan areas.

The unknown tomb in Changle Yuanyin Village attracted the attention of the archaeological team. Fang Kun was invited to participate in the investigation, and reunited with his former lover Luo Qing who had become the archaeological team leader, and discovered the “Ya-shaped” ancient tomb.Fang Kun reiterated his speculations at the time, which aroused controversy and concern, and also aroused the covetousness of cultural relic criminals.

Fang Kun, Luo Qing and police officer Qi Dacang organized the masses to participate in the protection of cultural relics, fought wits and courage with criminals, and effectively protected the Changle Yuanyin Village Tomb and surrounding monuments. The Yong'an Emperor's Mausoleum became a major archaeological discovery.