king of Wu sent a 20-year diplomatic mission led by Zhu Ying and Kang Tai along the coast of Asia, which reached as far as the Eastern Roman Empire. After centuries of disruption, the Song dynasty restored large-scale maritime trade from China in the South Pacific and Indian Oceans and reached as far as the Arabian Peninsula and East Africa. When his fleet first arrived at Malacca, there was already a sizable Chinese community. The General Survey of the Ocean Shores (, Yíngyá Shènglǎn), composed by the translator Ma Huan in 1416, gives very detailed accounts of his observations of people's customs and lives in the ports that they visited. He referred to the expatriate Chinese as "Tang" people (). Zheng He generally sought to attain his goals through diplomacy, and his large army awed most would-be enemies into submission. However, a contemporary reported that Zheng He "walked like a tiger" and did not shrink from violence when he considered it necessary to impress foreign peoples with China's military might. He ruthlessly suppressed pirates, who had long plagued Chinese and Southeast Asian waters. For example, he defeated Chen Zuyi, one of the most feared and respected pirate captains, and returned him to China for execution. He also waged a land war against the Kingdom of Kotte on Ceylon, and he made displays of military force when local officials threatened his fleet in Arabia and East Africa. From his fourth voyage, he brought envoys from 30 states, who traveled to China and paid their respects at the Ming court. In 1424, the Yongle Emperor died. His successor, the Hongxi Emperor (r. 14241425), stopped the voyages during his short reign. Zheng He made one more voyage during the reign of Hongxi's son, the Xuande Emperor (r. 1426–1435) but, the voyages of the Chinese treasure ship fleets then ended. Xuande believed his father's decision to halt the voyages had been meritorious and thus "there would be no need to make a detailed description of his grandfather's sending Zheng He to the Western Ocean." The voyages "were contrary to the rules stipulated in the Huang Ming Zuxun" (), the dynastic foundation documents laid down by the Hongwu Emperor: Some far-off countries pay their tribute to me at much expense and through great difficulties, all of which are by no means my own wish. Messages should be forwarded to them to reduce their tribute so