No one was involved. Shangshui Ma Weidong committed robbery, and he was the only one, so no one was involved. Shangshui County belongs to Zhoukou City, located in the southeast of Henan Province, southwest of Zhoukou City, bordering Zhaoling District in the west, Shangcai County in the south, Xiangcheng City in the east, Chuanhui District in the north, and Xihua and Huaiyang Districts across the Shahe River in the northwest and northeast.