By splitting clans, it means that he, Ye Bingjun, along with all his descendants, will no longer have any connection with Ye Mingquan's lineage!
The Ye Group belongs to Ye Mingquan. His lineage, due to their relationship with Ye Mingquan, although they may not have meat to eat, can always sip some of the broth.
Moreover, being members of the Ye Family in country Y, his descendants find it easier to arrange marriages than ordinary people.
Ye Mingquan would be gracious enough to provide a house and a car for his sons and grandsons when they get married. His generosity wouldn't waver.
But if they were to split the clan, they would clearly become different families.
Would Ye Mingquan then still care for his descendants?