1. "The Great Tang Snack Goods" is the story of Yuan Wan'er, a delicate cook played by Li Zixuan, who partners with Bai Yiming, a cold-faced gentleman played by Liu Runnan, to start a catering business in the Great Tang Dynasty.

2. Yuan Wan'er, the daughter of Yongxingfang in Chang'an City of the Tang Dynasty, is seriously injured in a fall, and the doctor is unable to cure her, so she can only be declared dead. Just when Yuan Wan'er's parents broke down and cried, Yuan Wan'er suddenly sat up from the bed, directly scaring the doctor away.

3. Yuan Wan Er was shocked to learn that she was in the Great Tang Dynasty. To be exact, she is not the real Yuan Wan Er, but Yang Xiao Xiao who traveled from modern times to the past. While participating in the nation's first vegan donut competition, Yang Xiao Xiao accidentally choked and fainted, traveling to the Great Tang.

4. Realizing that her soul has crossed over into Yuan Wan Er's body, Yang Xiao Xiao tries to explain the matter clearly to Yuan Wan Er's parents, but they don't understand crossing over at all. Yuan's father and mother, who love their daughter dearly, don't let Yuan Wan'er walk around, and tell her in tears that even if she turns out to be a fool, she is still their daughter.