The executioner spat out a mouthful of blood and was severely beaten. Hence, the punishment was halted.
The Monster King saw the whole scene unfold and decided that it was time for him to interrupt. His spiritual power was already at the level of a Great Deity, so every move of his was equipped with an enormous force. He launched his first strike at Fan Qianshi, which was a powerful attack. However, Fan Qianshi could easily take a step back to avoid getting hit.
Gu Xijiu observed his moves and could already make a few predictions. She could see that the Monster King would not hit Fan Qianshi since one tiny step was enough to avoid his first attack. But to her utter surprise, Fan Qianshi did not move at all. He disregarded the swift and fierce attack that was clearly aimed at him. Instead, he went straight to the pillar and cut away the chains that were holding 'Wu Qianyan' in place.