Prequel to Beyond the Charts

At the end of the Ming Dynasty, the time traveler Chen Mu boarded Zheng He's last treasure ship. He just wanted to survive, but he was involved in a dead end. The sea chart has been tampered with, pointing to a dead end; a mysterious note with simplified Chinese pinyin written on it is a reminder that should not exist in this era. There are murderous intentions inside the ship, and powerful enemies on the sea are waiting for you. He relied on modern knowledge to survive, and even glimpsed a glimmer of vitality in Zheng He's secret scrolls - a strange undercurrent hidden in the "New Ocean". However, when he finally got close to the truth after going through many dangers, he was shocked to discover that the undercurrent was not leading to a way out, but a cold trap spanning six hundred years. A space-time hunt targeting Chinese civilization has long been waiting for his arrival.