Bai Kunyu had matters to attend to, so he mainly delegated them to Shen Pingkang, leaving Chen Wenbin with few opportunities to handle important tasks.
Even if Chen Wenbin did manage some impressive feats, Shen Pingkang would steal the credit, and often, Shen Pingkang would blame Chen Wenbin for any failures, forcing Chen Wenbin to take the fall.
Shen Pingkang's actions were naturally aimed at preserving his own position.
As a result, the relationship between the two was understandably strained.
However, since Chen Wenbin was the second assistant, no matter how dissatisfied he was with Shen Pingkang, he was powerless to do anything about it.
If Bai Kunyu asked Chen Wenbin to take over for him, what good would that do him?
Even if Bai Kunyu wanted to save him later on, Chen Wenbin would surely do everything in his power to obstruct it.