The first time Xiao Shi sensed that the other party might be the son of the Martial Emperor was during the battle with the prince.
At that time, Xiao Shi had borrowed strength from the other party. After he used the other party's power, this power actually froze the prince's figure.
From then on, Xiao Shi vaguely sensed the existence of the black coffin must have a deep connection with the Wu Empire. Many fates of the Great Wu Empire were sealed on the body of the prince.
If it were anyone else, even the three demigod Heavenly Kings were unable to freeze the body of the Great Wu Empire's descendant. To be able to ignore the fate of the Great Wu Empire, the person who caused the prince's figure to freeze was definitely someone with the same status as the prince.
Moreover, the prince had also recognized the power Xiao Shi used, and he was shocked. The prince did not directly point out the other party's identity. But it also made Xiao Shi have many guesses.