 Some scholars have speculated that Shijiahe could have been considered an ancient state due to its relatively advanced socio-political structure.Shijiahe is said to have a population size and land area greater than Erlitou, however it is not very clear if they had the same level of centralized control over these regions that the Erlitou did.Other scholars note that the Shijiahe and other cultures along the Yangtze were more socially complex and developed than their northern contemporaries in the Han Valley.