C518 Departure of china island
Profound Sky Continent calendar, 9800 September 11.
The weather was clear, calm, and suitable for travel.
A pitch-black ship pierced the surface of the sea and quickly headed towards the east.
The ship was over 300 meters long, had six sails, three levels of cockpit, and traveled at a speed of 500 miles per hour. At full speed, the bottom of the boat was a foot above the surface of the sea