Guangzhou, Ningbo and Quanzhou all had maritime trade offices but they were limited to specific areas. The South Sea trade was no longer permitted in Quanzhou and only trade with Ryukyu was allowed in Quanzhou.
Guangzhou, Ningbo, and Quanzhou each possessed maritime trade offices but were restricted to particular areas. The maritime trade in the South Sea was no longer allowed in Quanzhou, whereas only trade with Ryukyu was permitted there.