Dong 'e Ejiao was first born in Dong 'e Town, Pingyin County, namely Dong 'e Ejiao. Later, the trademark of Dong 'e Ejiao was first registered in Dong 'e County, Liaocheng, so the registered trademark of Dong 'e Ejiao in Dong 'e Town was "Fupai". It is also said that Dong 'e County used to be under the jurisdiction of Pingyin, and Dong 'e Town is now a town. Later, Dong 'e County was placed under Liaocheng, and they registered the trademark first, so Ejiao is true.