Technology time travel: Modern mechanical engineer Qi Xiaotang accidentally traveled to the Tang Dynasty. With his mechanical knowledge and modern thinking, he caused a sensation in ancient society. He gradually showed his talents by making simple machines.
Identity crisis: Qi Xiaotang was mistaken for the missing concubine of the Duke of Qi, and was involved in a dispute between aristocratic families. He had to deal with the infighting within the family while hiding his true identity.
Talented Girl Encounter: Meet Tang Liuli, an extremely intelligent girl from a family. From testing each other to solving technical problems together, the two establish a special friendship that transcends the times.
Cultural collision: Modern thinking and ancient values continue to collide. Qi Xiaotang uses "Internet thinking" to transform ancient business models, triggering a series of ridiculous and thought-provoking events.
The crisis emerges: Qi Xiaotang's "inventions and creations" attract the attention of the court. At the same time, clues emerge that the real Qi family bastard may still be alive, laying the groundwork for a greater conflict in the story.