C173 Calculating
"Sit up straight and let me see how strong your body is," Zhang Zhen said indifferently.
Hearing Zhang Zhen's words, Yan Qihang sat there cautiously, not knowing what to do.
"Take a deep breath and straighten your body so that your bones stick out. "Zhang Zhen said as he looked at Yan Qihang. He could tell the strength of a person's body by looking at the structure of their bones