What is a King?
A person capable of anything, daring of anything, not giving up because of an 'impossibility', and never using an 'impossibility' to back down.
This is what a King is!
Against Moya's third form, whose speed was extremely fast, Feng Yuanlin and Liu Yu would definitely choose to stand their ground in defense. If it was Pulp Farmer, he might choose to defend and and seek an opportunity to launch a counter attack. If it were confident geniuses like Sunless or Speechless, they would choose to give up on defense and continuously use large area-of-effect attacks, so as to deluge Moya's movement range, preventing him from avoiding it.
Shi Xiaobai could do any of these, but he did not choose any of the three options.
This was because not only did a King want to win, a King had to win with sufficient dominance!
