I am happy that this drama is about to end I love Cheng Yi and Yang Zi, but this drama failed to win me over, it was good at first but then it got very tiring, repetitive and boring in the middle of the way.
She didn't know that Yan Dan was alive when she did this, when she found out, it was already late as she had already…
In Shi Xi's view, keeping Ying Deng's memories would make her feel more shame and anger for remembering that she was powerful in the past and now lives as an ordinary human being. Shi Xi says this in the episode.
So the witch always ended up in the Mortal realm with her own memories… idk if her sister did a good thing here…
She didn't know that Yan Dan was alive when she did this, when she found out, it was already late as she had already sent Ying Deng to the mortal realm.