It's no wonder Gu Yi'an would think this way.
Actually, it's quite understandable, isn't it?
Zhou Wanyi's brain was injured, leading to a series of abnormal behaviors. Since she is a member of the Zhou family, it was normal for them to be tolerant and caring towards her. Even considering the friendship between the two families, it would be normal for Tan Jincheng to show her more concern, but he absolutely wouldn't indulge and tolerate Zhou Wanyi to such an extent.
And now, the level of indulgence and tolerance Tan Jincheng shows towards Zhou Wanyi is indeed quite high. Doesn't this say something?
But the exact relationship between the two is something Gu Yi'an can't figure out.
Before coming, Tan Jincheng hadn't told her about Zhou Wanyi's situation, but Gu Yi'an wasn't angry, because there was no need. Zhou Wanyi's brain was injured; what reason did Gu Yi'an have to be angry with her?
Of course, she wouldn't be angry with Tan Jincheng either because there really was no need.