It's not Guan Yu's violence, but to try to teach each other a lesson and let him know what the end is.
"Grandpa, I know it's wrong. Please let me go, Grandpa... Cough, please bypass me this time... Sun Heizi can't stand it anymore. The cold prickling pain on his wrist and the pain on his body make him lose the ability to resist the test and beg for mercy.
"Forgive you? Let go of you? Would you let me go if the pistol was still in your hand? Guan Yu said coldly that there was a sudden killing on his face, but in a flash, Guan Yu did intend...