Judging by the current state of the battle, it was almost certain that the battle would end in a stalemate. The red-tailed beast was stronger, but Shang and Ye Luo working together put them on equal ground. The only thing that Ye Chong could not understand was why Shang remained stationary throughout the battle.
Shang was a lazy fellow, but he always treated battle seriously. Besides, this was a critical situation. Why would the mech choose to fire his weapon while remaining at the same position? Shooting from a stationary position was easier than shooting and moving at the same time, but the latter was more effective and powerful in actual combat. Moreover, Ye Chong knew that Mu was a particularly competent shooter.
Why, then, did Shang choose to shoot from a stationary position?