A scout ship named "No. 28" In front of Zheng He's fleet. This ship is the "eyes" and "blade" of the fleet, and is responsible for pathfinding, mine clearing, and handling ulterior secret tasks. The work combines the historical mystery of "Searching for Emperor Jianwen" with "Eastern Sea Power". Emperor Jianwen was not a simple political exile, but took away the formation that sealed the "Abyss Dragon Veins" when the Ming Dynasty was founded. Zhu Di went to the West, explicitly to promote the country's prestige, but secretly to prevent the dragon vein from getting out of control and triggering a world-destroying tsunami.