the story is very well written stupid . the plot doesn't think out things logically but as if copy pasting in solutions to an already happened tragedy without thinking logically that if he had the ability non of this would have happened.
The old man can make him so strong in three years so if he's sincere he would have rescued his mom and beat the Luo family and took care of his girl for milestones in his training. But no it often seems like he doesn't exist.