Xiao Shi, the Shibi Immortal Lord from thousands of years ago, fell in the cultivation war, but was unexpectedly reborn as a modern high school history teacher. When he opened the textbook, he found that history had been tampered with and cultivation civilization had been erased from human memory. With a magical chalk that can project real history, he and Yao Guang, a student from the Department of Archeology, embark on a journey to trace the truth.
From the burning of books by the First Emperor of Qin to the "Sky Lock Project" of the Ming and Qing Dynasties, from the Immortal Alliance of the Tang Dynasty to the secret realm of the city, they experienced the prosperous age of cultivation and war in historical projections, revealing the truth of a civilization that was deliberately buried. However, the price of revising history is to shake the order of the modern world.
The mysterious "Time Trial Bureau", the lost cultivator family, the depleted spiritual energy, the city that combines technology and immortal magic - Xiao Shi and Yaoguang are struggling between history and reality. They must decide: to protect the tampered peace, or to return the cultivation civilization to the world.
What is carved with chalk is not just knowledge, but also destiny; what is opened is not just a textbook, but the truth about the entire world.
