C415 Sand!

"No, no, no, I've been to the desert many times, and it's hard to find a water source in a place like this. Take this..."

Prof. Ma said with difficulty.

Qin Feng saw him begging so hard, as if the urine was not urine, but gold. He had to do what he said and put the urine in the bottle.

"Prof. Ma, please don't drink it. Hang in there for a while. I will go find a water source