The letter from Steward Yue managed to extricate Gu Dashan's family from the situation.
It was part of Gu Jinli and their plan; their family acted this way because of their fear of the noble behind Lord Lai.
The affair of the Old Gu Family had become too sensational, and if it reached the Capital, the businesses of Gu Jinli's household would attract the attention of the Imperial Family there. Protecting their business then would be a mere fantasy.
Thus, to avoid the Imperial Family's covetous eyes, they had to minimize their influence. Exposing Lord Lai's wrongdoings and putting him in the spotlight was the best tactic to divert attention.
Lord Lai had a noble backing him, and if something happened to him, that noble would definitely be affected.
