The Palace Maid Is Promoted: Your Concubine, Your Express Delivery Has Arrived.

Shen Zhixin, a modern express delivery sorter, was hit by a giant express box while staying up late to sort. When he opened his eyes, he was transformed into the last maid in the palace and was assigned to the cold palace where "birds have nothing to do". His daily job is to deliver old and unwanted items to various palaces, which is comparable to the ancient "return courier".