On June 13, the fourth year of Jianwen in the Ming Dynasty (July 13, 1402 AD), King Zhu Di of Yan led his army to attack Yingtianfu, the capital of the Ming Empire. Emperor Jianwen disappeared in a fire; this became one of the biggest unsolved cases in Chinese history.
In order to solve the mystery, Zheng He led the largest fleet in the world three years later (the third year of Yongle in the Ming Dynasty; 1405 AD) and sailed to the sea seven times. As a result, more mysteries were left unsolved until 600 years later...
Zhang Cai came to China again in order to trace the whereabouts of the ancient map and compass obtained from the Texas nobles. After meeting with his friend Jiang Long, he learned of the Japanese's unusual behavior and traced it all the way from Shanghai to Zhongshan on the outskirts of Nanjing; but he did not know that he had fallen into the trap set by Jinzhi and Kodama. After some twists and turns, the two met Zheng He's descendants and thus solved part of the mystery. In order to further investigate, the two decided to follow Zheng He's footsteps and go overseas to Guri (today's Koli Koze, India). The two parties are about to compete in the second round in the Indian Ocean...
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