the highest posts as Grand Director and later as Chief Envoy () during his sea voyages. Over the next three decades he conducted seven of the voyages on behalf of the emperor of trading and collecting tribute in the eastern Pacific and Indian Oceans. In 1424, Zheng He traveled to Palembang in Sumatra to confer an official seal and letter of appointment upon Shi Jisun, who was placed in the office of Pacification Commissioner. The Taizong Shilu 27 February 1424 entry reports that Shi Jisun had sent Qiu Yancheng as envoy to petition the approval of the succession from his father Shi Jinqing, who was the Pacification Commissioner of Palembang, and was given permission from the Yongle Emperor. On 7 September 1424, Zhu Gaozhi had inherited the throne as the Hongxi Emperor after the death of the Yongle Emperor on 12 August 1424. When Zheng He returned from Palembang, he found that the Yongle Emperor had died during his absence. On 7 September 1424, the Hongxi Emperor terminated the undertaking of further treasure voyages. On 24 February 1425, he appointed Zheng He as the defender of Nanjing and ordered him to continue his command over the treasure fleet for the city's defense. On 25 March 1428, the Xuande Emperor ordered Zheng He and others to take over the supervision for the rebuilding and repair of the Great Bao'en Temple at Nanjing. He completed the construction of the temple in 1431. On 15 May 1426, the Xuande Emperor ordered the Directorate of Ceremonial to send a letter to Zheng He to reprimand him for a transgression. Earlier, an official petitioned the emperor to reward workmen who had built temples in Nanjing. The Xuande Emperor responded negatively to the official for placing the costs to the court instead of the monks themselves, but he realized that Zheng He and his associates had instigated the official. According to , the nature of the emperor's words indicated that Zheng He's behaviour in the situation was the last straw, but there is too little information about what had happened earlier. Nevertheless, the Xuande Emperor would eventually come to trust Zheng He. In 1430, the new Xuande Emperor appointed Zheng He to command over a seventh and final expedition into the "Western Ocean" (Indian Ocean). In 1431, Zheng He was bestowed with the title Sanbao Taijian (), using his informal name Sanbao and the title of