If calculated in terms of territorial area, Crab Island and Tiegou Island are actually almost the same, except that Tiegou Island is in the shape of a giant island, while Crab Island is in the shape of a long strip.
Coupled with the fact that there were no top experts to suppress the formation, the number of Cambay's cavalry that had just captured Crab Island was as many as 70,000, and they were personally commanded by Commander Cambay.