Nomadic empire
The Xiongnu were a confederation of nomadic tribes from Central Asia with a ruling class of unknown origin and other subjugated tribes. They lived on the Mongolian Plateau between the 3rd century BC and the 460s AD, their territories including modern day Mongolia, southern Siberia, western Manchuria, and the modern Chinese provinces of Inner Mongolia, Gansu, and Xinjiang. The Xiongnu was the first unified empire of nomadic peoples. Relations between early Chinese dynasties and the Xiongnu were complicated and included military conflict, exchanges of tribute and trade, and marriage treaties. When Emperor Qin Shihuang drove them away from the south of the Yellow River, he built the famous Great Wall to prevent the Xiongnu from coming back.
Sheshui
Huanglong, one of the Eight Immortals was named Qi Tianlong, and married Ho Xiangu. They lived on a boat, and often helped others. One year, the rain came down in torrents, the mountains burst, the fertile fields flooded, and the animals were slaughtered. Qi Tianlong and his wife rescued many villagers from the calamities. But the two of them became very tired, and were swept away by the floodwaters. Their bodies were found in the county in the north, and the couple were buried on the banks of the She River. In honor of the couple who saved their lives, the villagers built the Xianyou Tai and Xian You cave in front of the couple's tomb, dedicated to their memory. This touched the Eight Immortals, and every winter solstice after the couple's death, the group gathered here and give a wine libation as a sacrifice.