The Smuggling Route

Although it was already the afternoon, as long as the sun had yet to set, the desert was still extremely hot. Zhang Zian witnessed his own urine stains staying on the stone for less than ten seconds before evaporating completely.

He was about to leave when, out of the corner of his eye, he suddenly noticed that something on the edge of the stone seemed to be moving in the shadow.

What was that?

He was curious, but the stone was short and narrow. In addition, the outdoor light was very strong, while the indoor light was dim. It would be difficult to see what was inside unless he squatted down.

Of course, there was another way. He could simply pry the stone open. 

Zhang Zian looked at the stone that had just been covered in his urine. He could not bear to touch it. In fact, he convinced himself he might not really be that curious after all.