The Heheyuan Empire is neither a shooting star nor a flash in the pan, nor a regret. What is regrettable is that when people talk about the Yuan Dynasty, they can always think of that behemoth spanning three continents, recalling its brevity, glory and pride of territory, but they tend to ignore so many stories that have happened within more than 10 million square kilometers in a hundred years, and such a dazzling life of flesh and blood.