Lan xian According to historical records, the ancestor of Lan in Yucheng County, Henan Province is Lan Xian. He was a warlord in the late Eastern Han Dynasty, and he had a certain influence in Huaishui area. Later, his descendants gradually developed and became the local rich and famous family in the Tang Dynasty. After thousands of years of inheritance, Lanjia has become a part of Yucheng County's historical and cultural heritage.