The captain waved to the villagers who were herding cattle in the distance. What is he doing?

The captain waved to the villagers who were herding cattle in the distance. He did it so that he could lead the way. Because in the red classic story "Wang Erxiao", one day he went up the mountain to herd cattle and met a Japanese squadron. The captain arrested him and asked him to lead the way. He led the Japanese into the encirclement of the Eighth Route Army, and the Japanese found out that they had been cheated and killed him. But the Japanese were also killed by the Eighth Route Army. Wang Erxiao was only 13 years old when he died. Wang Erxiao was orphaned at the age of/kloc-0 and had to go out to beg. Later, I heard that the south of Chajianling was close to the anti-Japanese base area, so I fled to Langyakou village in Nanmazhuang area. In contact with the anti-Japanese soldiers and civilians, he gradually understood the truth of anti-Japanese and joined the anti-Japanese youth league. Langya Pass is an important pass of the Great Wall, the main road from Laiyuan to Fuping, and the only way for Japanese troops to sweep. Wang Erxiao often stood guard for the Eighth Route Army by herding cattle on the hillside, and took time to mow the grass, send military shoes and deliver letters to the Eighth Route Army, thus doing a lot of work for War of Resistance against Japanese Aggression.