To be honest, Yu Sheng was quite surprised at this moment.
After all, he had seen people pretending to be submissive, and those who remained defiant even in the face of doom, but such an exuberant submissive grandson was indeed a first for him.
The flash of light suddenly disappeared in the distance, evidently using some kind of teleportation technology—perhaps to a pre-prepared safe hideout or randomly transported to an unknown nook in space, anyway, it vanished from Yu Sheng's perception.
This left him somewhat regretful—he should have spent more time studying the ship's structure, at least trying to find out what offensive weapons it had, so he could have fired a shot before the flash accelerated.
Of course, it's too late to think about that now, and although he's a bit regretful, Yu Sheng didn't leave himself with no backup plan—while battling that sage, he had already infused his blood into the steel and left a "mark" on him.