Zheng Yi. 10 connected concepts: Tributary system of China (related to), Pirates of the South China Coast (related to), Jiaqing Emperor (related to), Guangdong (related to), Tây Sơn dynasty (related to), Cheung Po Tsai (related to), South China Sea (related to), Qing dynasty (related to), Red Flag Fleet (has participant), Zheng Yi Sao (related to).