Watching the entire scene, quite a number of people stared with eyes wide with shock, looking like they had never thought that the mighty Family Head Liu would stoop so low as to commit a sneak attack upon someone's back. The crowd of people present there, were all people of a certain status and position, who would think it beneath themselves to wound an opponent from his back, as even if they were to win, it would earn them nothing but disdain from people.
If one sought to win, the people would wish it to be where one defeated his opponent in a fair and proper fight, to take the enemy's life!
Hence, when Family Head Liu actually used such a despicable method before everyone's eyes, many of them shook their heads with a sigh after recovering from the initial shock, becoming highly disappointed with him.