Yanmen Pass
Wei Wentong's name was from Wei Wentong (尉文通, same pronunciation but different characters), a leader of a small rebellion group in Yanmen Pass in late Sui Dynasty. However, his stories were more likely derived from stories of Wei Wensheng (卫文升) or Wei Xuan (卫玄). Wei Wensheng was a brave warrior in Sui Dynasty who got famous during a battle against Goryeo Koreans. After that battle, he became a general and was ordered to guard the Tongguan Pass. He died of an illness before the collapse of Sui Dynasty.