Spring and autumn

As soon as it gets dark, the soul returns.With these souls on my back, I stand in the dark and spy on this world; and my name is Light.The four kingdoms of Qin, Jin, Qi and Chu competed for hegemony, and the history was superimposed, and the name of the country only represented the direction.All characters, plots, place names, etc. are fictitious, please don't be fooled by the honest country name...