Actually, there was no real grievance between Wang Xiaolong and Wang Luqi.
It was just that Wang Luqi had high hopes for Wang Xiaolong back then, but eventually did not get the return he wanted, which led to discontent.
Such a past, if it were anyone else, would have been disregarded long ago.
Moreover, on close investigation, they had no grounds for complaint.
On one hand, it was they who had initially ingratiated themselves, and Wang Xiaolong had never promised them anything.
On the other hand, the failure of their ingratiation was merely due to their excessively high expectations.
Wang Xiaolong also wanted to make something of himself after graduating from university, but fate played tricks on him, leading to his fiancée running away and then his grandfather passing away, eventually leaving him demented.