Shang Wen heavily resembles the Emperor, whether it is the appearance of the personality.
As Mark met the Emperor during the public trial, he couldn't help but remember his biological father when he looked at the prince. His inner devil from the heart kept whispering in his head to click the trigger and injure one of his eyes. On the other hand, the inner devil from the brain tells that it is a foolish choice because he is a potential golden goose that will make him richer.
Mark went into a dilemma for a few seconds. The second prince saw that Mark was hesitating to shoot and misunderstood that the latter was waiting for the signal.
He shoots out a fireball and lets it explode in the air.
"Nah, let's not do that." Mark's ambition for developing the store outweighed his revenge for the Imperial family. So, he threw away an opportunity to ambush the second prince and continued with the demonstration.