The power exerted by shulao is to attack the heavy sword; the pot shaped treasure sacrificed is to block the south of Chu.

the reason for this arrangement is that the previous experience has proved that although the power attacks are useful to Chunan, they are not very effective, and the effective attacks will be greatly reduced. Secondly, with the tacit cooperation of Chunan and Epee, shulao naturally understands who the real owner of Epee is. Therefore, shulao wants to force the Epee to give in, and then use the Epee of Chunan, Chop to the south of Chu.

for his purpose, he didn't care how much he hurt Chu...