Elder Meng stepped forward and said, "That's right. It's Mo Yi who violated the rules first today, so we came to reason with her. Who knew that she did not repent and was even more insolent and started attacking us? We never thought of hurting the two of them and were only acting according to the family rules."
The Jiang Family's hall of discipline was initially managed by Jiang Kai, and the management rights were handed to Elder Meng only after Jiang Kai left the headquarters.
Elder Meng understood Jiang Kai very well and knew that he hated people who violated the family rules the most; thus, he made use of that point.
Furthermore, the departure of Jiang Lang and his wife from the house had already caused Jiang Kai's dissatisfaction. If not for the Domain Monarch choosing not to pursue this matter, Jiang Kai would already have caught the two of them back to the Jiang Family to punish them according to the family rules.