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 Yin Village, Bailuyuan, might be the mausoleum of Emperor Taizong of the Han Dynasty.His mentor Zan Maochang took him to Bailuyuan for field investigation, but he accidentally lost his life.

Fang Kun took his mentor's wish and volunteered to go to Yusai to conduct Great Wall archaeology.The unknown tomb in Yin Village of Bailuyuan 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 Yincun Tomb in Bailuyuan and the surrounding monuments. The mausoleum of Emperor Taizong of the Han Dynasty became a major archaeological discovery.