August 15th was originally the Mid-Autumn Festival, with no significant difference from the commencement of spring or summer.
Thirty years ago, the Grand Commander Sima Cuo of Great Qin had struck far into the Xiongnu territories and returned victorious. His return to Heaven Capital City coincidentally fell on August 15th, when a Hu merchant offered round cakes to celebrate. The Emperor, pointing at the full moon, laughingly suggested inviting the Moon Rabbit to partake, consequently sharing the cakes with his ministers.
As the saying goes, "as above, so below," and though the current Emperor was no longer the one from back then, in recent years, Mid-Autumn celebrations had grown increasingly lively, celebrated across the regions.
The Imperial Court would lift the curfew for those three days, and the streets, embellished with flower lanterns and riddle-solving games, buzzed with excitement, gradually becoming a season for wanderers to return home.