Who is the prototype of the wishing dragon emperor?

According to the query of Iqiyi, The Wishing Dragon was produced by Beijing Yaolai Film and Television Culture Media Co., Ltd. and Tencent Film and Television Culture Communication Co., Ltd., directed and written by Chris Eberhans, and voiced by Jackie Chan, Niu Junfeng, Wei Wei and Su Baili. The prototype of the emperor in the movie "Wishing Dragon" is Qin Shihuang.