Liang Chen was a normal youth, one could easily find countless others like him in the Qing clan. He thought that his normal and unremarkable existence would continue for the rest of his life, a thought that was shattered when he was 12. His parents were forced to take the blame for something that they had not done, causing them to be publicly executed.
Liang Chen had been told about how just the heaven's were, how they would punish evildoers and those who killed the innocent. But now his parents were dead, and the man responsible for it walks free without suffering anything. That was when Liang Chen learned the truth. The heaven's aren't just, they are indifferent. That was when he decided, if the heaven's won't send down their wrath on the man who caused his parents to die, then he would.
If the heaven's have no wrath, then he will become that wrath.