C737 Old Parents and Children
He's getting older and older, and recently because his wife's been arrested, he's both busy with the company and trying to find a way to get his wife out.
He did not have enough energy, so he had to consider the future of his youngest son. Even if he left the Mu's Group to his youngest son, his youngest son had to be able to keep it.
Mu Jing would not really leave the Mu's to Tianci