Yuchi Jingde (尉遅恭) was a general during China's Tang Dynasty that was later deified as 胡敬徳, alongside fellow general Qin Shubao. As the legend goes, the emperor asked them to stand guard over his sleep to ward off a ghost that had been troubling him in the night. Under their guard, he slept peacefully and commissioned portraits of the two of them to keep watch over his room. Due to this legend, they are known as door gods and commonly used to attract good luck and ward off evil spirits.