When a prideful person like Qie Anzhie experienced such a grievance he couldn't let his older brother get away with it. It wasn't hard for him finding out what happened to Qie Ranzhe these past few months.
If he had known earlier while his brother was still stuck in the game, he would have told his father to use the excuse that Qie Ranzhe was incapacitated in order to take over GameX and absorb it into the Qie family empire. It was such a shame that he only found out after his brother woke up.
The only other way he could retaliate was to splash dirty water on GameX's technology and slowly sink the ship. His plan seemed to work as it had caught his father's attention which is why he was being called to the old man's office.