Liu Wei and Guan Huang stood guard beside Zhao Hai. Although the two of them had not reached the consolidated equipment stage yet, they were at least at level nine, and had a high chance of reaching the consolidated equipment stage. However, in Zhao Hai's eyes, they were still far from being able to do so.
However, the two of them only needed to stay by Zhao Hai's side and not let him be disturbed. The real guards were the red birds, stone hammers, and iron-thread grass. The two of them were just dispensable.
The reason why Zhao Hai kept the two of them was because he needed them to sell things when he was setting up the interior of the sword. At the same time, he didn't want anyone to see anything, so he kept them.
Now that the two of them had become Zhao Hai's slaves, he would not kill them. He was not a killer. Now that the two of them had become his slaves, he would not kill them so easily because there was no need to.