Pei Yan, a doctor of architectural history, passed through Zhenguan and became a "waste" clerk at the bottom of the prison. He originally wanted to live and die, but he was pushed to the forefront because of the "Chang'an Dangerous Building Renovation Order". Prince Li Chengqian was worried that no one could defend him, so he was forcibly tied to the chariot to seize the throne. Pei Yan used modern engineering to create "seismic-resistant bricks" and "double-layer arch bridges", but it touched the hearts of wealthy families such as Changsun Wuji. Faced with assassinations, frame-ups, and imperial suspicions, he had no choice but to use Cheng Yaojin as a human shield, make a deal with Wu Meiniang, and gradually dismantle the hardest bone of the Tang Dynasty, Chang'an City, under Yan Liben's sneer. But when he finally stood firm, he unexpectedly discovered that on the remaining pages of the half-volume "Creation Method", there was a name that did not belong to this era.
