C134 Riser oil

It was obvious that Situ Xing was able to tell that I only had a vague understanding of what was going on. However, he unexpectedly only glanced at me with a smile and didn't bother with it. Instead, he stealthily retreated and disappeared from my sight.

I sat down and thought about it carefully. I tried to imitate it a few times, but the more I tried, the less I liked it