The third fastest were the two treasure ships full of cargo. This was a team that returned directly to the AO Tian port. Because they were full of cargo, their speed was much slower than the airships. Perhaps after the battle between the ancient warship and the large warship, they would meet them on their way back to the AO Tian port.
Finally, there was the treasure ship that was dragging the two broken large warships. Although it was an empty ship, the two large warships without any mechanical power were much heavier than when they were loaded with cargo. By the time they returned to the AO Tian port, everything would have been settled.
Lin Yi's arrangement was definitely a bit risky. If Gu Yunhao was brave enough and came back, he might be able to take all four treasure ships in one fell swoop. At the very least, he could take back the two empty treasure ships and the two large warships.