C175

However, even though Long Xiaoyuan had mixed feelings, he understood that... To be merciful to the enemy is to be cruel to oneself.

These people were the ones who wanted to kill him. If they didn't die, then he would be the one to die!

Therefore, cruelty was necessary to survive.

If you're the only one who's going to die, then I'll choose to perish. Long Xiaoyuan was not a merciful man