During Those Years When He Was a National Preceptor in the Tang Dynasty

A mysterious bronze mirror connects time and space for thousands of years. The protagonist accidentally falls into the troubled Tang Dynasty during the Anshi Rebellion, and is trapped in intrigues and pursuits. When the modern memory disappears with the cracks in the mirror, he must choose between saving history and returning to the future - and who is the woman in the mirror who is similar to his old friend? On the night of the blood moon, cause and effect are reset, and a fate that spans a thousand years is coming to an end...