If i remember correctly Because of that incident niannian got kidnapped instead of shen luon and thats niannians breaking point to which he kept screaming he wanted to divorce gu yansheng even going as far as to putting a knife to his own neck just so gu's mother would approve of the divorce and tell gu to sign it
Adding to this they broke up cause of Shen Loaun and that Gu Yansheng or whatever his name is will suffer cause his dumbass brain but who cares right :))
If yall want spoilers
If i remember correctly Because of that incident niannian got kidnapped instead of shen luon and thats niannians breaking point to which he kept screaming he wanted to divorce gu yansheng even going as far as to putting a knife to his own neck just so gu's mother would approve of the divorce and tell gu to sign it