Because she had figured it out.
Figured out one thing.
All of Yun Chunxue's tricks were worthless in front of Gong Heng. Every time Gong Heng saw Yun Chunxue with her, he looked somewhat nervous, and she had broken down, been sad, and shed tears over and over again because of Yun Chunxue.
If he truly cared about her, he wouldn't let Yun Chunxue stay by his side.
This was an implicit acceptance of harm.
At this moment, she was very well-behaved and very understanding, saying that Gong Heng had no choice during the day, and it was right for him to take Yun Chunxue away.
But this consideration made Gong Heng even more frantic.
In his memory, Mianmian was a frail little person with the temperament of a young lady who always liked to be unreasonable, and then became obedient and sensible under his cajoling.
Now the first two steps were skipped entirely.
This was... growth!
Gong Heng took a deep breath and said, "Let's go, come back with me."