In the autumn of 1937, on the eve of the fall of Nanjing, archaeologist Cheng Xiangqian accidentally obtained an ancient jade from the Warring States Period that could sense the "memory" of historical artifacts. He originally wanted to withdraw westward with cultural relics, but he found himself involved in a shocking conspiracy. The Japanese intelligence chief Akira Kage was secretly looking for the legendary imperial seal that could "change the dynasty" in an attempt to give the puppet regime "legitimacy". Cheng Xiangqian was forced to become a pawn in this secret war, and every step he took stepped on the edge of historical reality. What Gu Yu gave him was not a superpower, but the patience to talk to history - he could hear the truth told by the cultural relics, but he had to use the most clumsy way to uncover the layers of lies step by step in the hail of bullets. When Nanjing fell and the blood of 300,000 compatriots dyed the river red, Cheng Qianqian discovered that the jade seal in his hand was the final key to changing this catastrophe - but can history really be changed?
