We didn't wait long before we heard the engine roaring like a tiger in the mountains and forests. Looking at it, two dusty off-road vehicles were driving along the mountain road. When the car stopped at the foot of the hill, people stood upright and showed their sincere respect.

Ten minutes later, six people went up the hill, wearing simple sports clothes, carrying a backpack, carrying a hammer, spade and other tools, which are not much different from our dress, but there is a sense of confidence between our eyebrows, and the attitude of nostrils toward the sky also proves that people in the world are not equal.

The leader...