The next day, the True Dragon Clan had sent someone to deliver the compensation Li Changsheng needed. After confirming that all the items he demanded had been delivered, he naturally sent Ao Qing back.
Before sending him back, Li Changsheng had specially strengthened the brand in his soul and asked Long Tiandi and Mir to take turns confirming that even the quasi-emperor ancestor of the True Dragon Clan wouldn't be able to notice the change before letting him go.
At that point, Ao Qing could no longer betray Li Changsheng, and simultaneously, Li Changsheng could control his life and death with a single thought.
Moreover, this soul mark also allowed Li Changsheng and Ao Qing to communicate through their souls. Unless this communication was deliberately intercepted through special methods, even the quasi-emperor would not have been able to notice it.