Although it was their family affair and Gu Ning was an outsider, Gu Ning was much more influential than his family.
Shen Liang tried to persuade Shu Fangyi not to get a divorce, but Shu Fangyi was determined, so Shen Liang had to give in. If he didn't agree, his family would suffer a greater loss at the court.
Because they agreed on the divorce, there was no need to hire a lawyer and they directly went to finish the documents at the Civil Affairs Bureau.
As for the divorce agreement, Shu Fangyi had already finished it last night and they just needed to print it out later. Therefore, once Shen Liang agreed to get a divorce, Shu Fangyi pulled him to the Civil Affairs Bureau.
She just gave birth and should stay indoors, but she couldn't wait any longer. She had to finish it as soon as possible in case any accidents happen.