What happened to Qingchuan in the palace lock heart jade? I saw in a MV that Ba Fujin was endowed with death. What are Qingchuan and May?

Qingchuan returned to modern times, and Mei finally returned to modern times and stayed with Qingchuan. As for Ba Fujin's death, I don't know what happened when I saw this scene. Although Huaying is exactly the same as Qingchuan, she is very vicious, because Mei found that Huaying smelled different from Qingchuan and left. At that time, Qingchuan was kidnapped by 13 brother, Huaying belonged to 4 brother, and 13 and 4 were a group. Later, Huaying tried to assassinate Liang Fei and was shot dead by the emperor.