Guo Jing/Yang Guo/Zhang Wuji

[PJ]

隐隐觉得自己便是他的传人一般。

This line literally says YG feels like Wang's successor. I read it as YG feeling a connection between he and Wang, whom YG's come to admire a lot due to benefiting from his advanced pointers. This connection makes YG feel like Wang's successor.

[Banh Mi]

I had the impression he felt like he was WCY's successor in that he is marrying XLN like how WCY should have married LCY.