Fang Kun, a graduate student in the Department of Archaeology at Qinchuan University, assisted in pursuing lost cultural relics overseas and discovered that the unknown tomb in the hidden village of Changleyuan might be the tomb of the Yong'an Emperor.The mentor Zan Maochang took him to Changleyuan for on-site inspection, but unexpectedly sacrificed his life.Fang Kun volunteered to go to Tibet to support Tibetan archaeology with the wish of his mentor.

The unknown tomb in the hidden village of Changle has attracted the attention of the archaeological team. Fang Kun was invited to participate in the survey and reunite with Luo Qing, the former lover who has become the captain of the archaeology team, and discovered the “-shaped ”-ancient tomb.Fang Kun raised the speculations of that year, which attracted controversy and attention, and also attracted the covetousness of cultural relics criminals.

Fang Kun, Luo Qing and police officer Qi Ocang organized the masses to participate in cultural relics protection, fought wits and courage with criminals, and effectively protected the remains of the large tomb of the hidden village in Changleyuan and surrounding ancient sites. The Yong'an imperial tomb became a major archaeological discovery.