What is the origin of killing and setting fire to people who don't plant good results all their lives?

This is not a poem, this is a feeling before death!

I don't cultivate good fruits all my life, but I only love killing and setting fires. It is said that Lu spent the night in Liuhe Temple after conquering Fang La, when he suddenly heard the sound of fighting outside, he found out that it was the high tide of Qiantang River when he left the temple. He remembered a sentence that Master Zhizhen once said to him, "Listen to the tide, but be silent when you see the letter". In other words, if he meets the tide letter, he is dead. Then he laughed, sat cross-legged, asked for a pen and paper, wrote an ode, and died after writing. This may be the most typical example of "putting down the butcher's knife and becoming a Buddha". Lu has been a warrior all his life and killed countless people, but suddenly he realized that "I don't cultivate good fruits in my life, but I only love killing and setting fires", which is also a complete merit.