C21 Soul Upgrade Technique

"I can't go on like this. I'm going to die of exhaustion before I reach the bottom of the mountain." Zheng Zinuo thought in his heart, but he still gritted his teeth and followed behind Feng Ziyan. Although his body was extremely tired, he did not shout to Feng Ziyan to rest or to ask for help.

Feng Ziyan also wanted to test Zheng Zinuo, so she ran down the mountain without looking back