Responses
I thought slice of life is just to remark this is not "fantasy" you know? Like this is based on real life without magic or anything like that. Like "this could happen in real life" (because it's true, this could happen in real life, it doesn't mean it has happened to someone the author knows, or that is actually happening to someone the author knows, even though it's possible), and obviously if you see this happening in real life it's worrying at least, but you are seeing it happening to fictional characters here.

but I think you people need to calm down:
1.- Those are fictional characters not actual people.
2.- You're all like "He Tian needs to calm down" when the only thing I see there is not an abuser but an author that doesn't know how to deal with the character she (or he) created.
She has always worked He Tian and Little Mo relationship with violence and now she doesn't know how to evolve the relationship without it (but that is bad writing, not that the character itself has had a poor development, because we all have seen how He Tian has evolve around this relationship).
Also even if this is a relationship that bases itself in a toxic interaction... please read the first part of this comment.