(I'm here to dig a hole. I only wrote one chapter before, but I think I should finish it.)
Probably Mr. England traveled to the Eastern Roman Empire period due to a magic error and turned into a cat. He met the young master from an unknown period who was disguised as a caravan, and the Shura field with the Qin Dynasty in the Eastern Roman Empire period. All in all, because it is a good tea group that travels back and forth, it is a character design disguised as a national theme. Because I don't know much about the Eastern Roman Empire, please treat it as the Eastern Roman Empire in a parallel world. It's just a background to draw from, and don't worry about possible time and space confusion bugs. ^_^
(Ps: Mr. Ying's perspective in the early stage, slow to warm up.)