Displacement: A directed line segment from the initial position to the final position. Its size has nothing to do with the path, and its direction is from the starting point to the end point.
Attack – Su Feng (cold face, hot heart and sultry)
Suffer – Xu Zheng (arrogant and strong)
"My name is Xu Zheng, Gong Shangjiao Zhengyu's Zheng."
"Su Feng." It's my birthday when the red leaves fall.
Intention: Human nature is good