Bai Chengan disappeared because of Xia Qinhuai's avoidant attachment personality attack. Xia Qinhuai searched for him for a long time but could not find him. Baichengan lives alone in the mountains and forests. Xia Qinhuai found him, and from then on Xia Qinhuai stalked him, and then chased his wife to the crematorium.
The plot can be easily changed, so don't expect it.
Purpose: cherish the present moment