Sheng Yan had essentially signed a secret agreement with Kevin—if one day Kevin fell out with PDZ and decided to leave, Kevin would still have Sheng Yan's trump card in hand!
Given that all of Sheng Yan's activities at PDZ were based on a secret contract with Kevin, Kevin, as the party A, could simply add a clause like "In the event of force majeure or other unforeseen circumstances, party A may unilaterally terminate the contract," effectively shutting down Sheng Yan's activities at PDZ.
By then, Sheng Yan would be just a regular endorsement star under PDZ's banner; being a super celebrity, it would be a simple matter for him to break the contract with PDZ.
Once the contract was dissolved, Sheng Yan could continue his collaboration with Kevin, who by that time would either have joined another luxury group or... start his own business!
Zhang Ming suddenly felt a bit panicked, shocked by the idea!