what if mu qing adopted wei ying?

This will be out of character but in this au cangse sanren was the biological daughter of Baoshan sanren. What if wei changze was the half brother of Jiang fengmian and Madam yu and Cangse were sworn sisters along with madam Jin and instead of Jiang yanli and Jin zixuan getting married in this the engagement was between Jin zixuan and wei ying but nobody else knew the couple died until later on but they keep the engagement going incase wei ying did survive and since wei ying has immortal blood mu qing was actually able to adopt wei ying. Also feng xin and mu qing are together in this they just fight like an old married couple so