"Under the Canopy: Jiajia's Ancient and Modern Fate" tells the story of a modern girl, Zhang Jiajia, who accidentally connects to the "canopy" across time and space, and embarks on a fantasy journey to help the development of ancient civilization. From the Jiangnan Silk Mill of the Southern Song Dynasty to the metropolitan markets of the Yuan Dynasty, from the Maritime Silk Road of the Ming Dynasty to the prosperous Kangxi and Qianlong dynasties of the Qing Dynasty, she relied on the modern knowledge transmitted by the sky to leave a deep mark on people's livelihood, science and technology, culture, military and other fields - improving agricultural tools to increase food production, teaching textile technology to prosper handicrafts, innovating medical methods to protect people's health, promoting Sino-foreign exchanges and promoting mutual learning among civilizations. During the travels, Jiajia not only witnessed the rise and fall of dynasties and the changes of the times, but also found her own self-worth in the collision of ancient and modern times, and forged a deep bond with historical figures. This is a work that combines history, science fiction and warmth, showing how individual wisdom can light up the light of civilization in the vast space and time.