Uilo kingdom was amongst the richest kingdoms in mainland China, perhaps richer than Tong'an and it was located on a distant island down South. The citizens of Uilo were mostly rich because of the sea, they controlled the harbor and all sort of trades which passed through their oceans. They collected heavy tax from merchants passing through and queen Shao Xue encouraged it. Also they had a huge number of fishes in their sea and they would trade them too with other neighboring kingdoms without sea, also most of the people were fishermen.