Li Jun was not a kind man.
He had previously really thought to keep watch on his younger brother for awhile, given his own relationship with his mother. But as the minutes turned into hours..his anger grew.. such was a human being's unpredictability. The audacity of a brat to challenge not only his throne but to even aim at the life of his wife. He shuddered and shuddered again thinking of what could have happened if the assassination had succeeded..He could not complete his own thoughts and turn it towards the nagging thirst for revenge. He had never been a kind man and everyone knew that ... IT WASN'T NICE TO DISSAPPOINT THEIR EXPECTATIONS.
Thus, the plan was put into motion and Li Jun himself headed it.