Complex sentence: In July 1406, the Yongle Emperor appointed Duke Zhu Neng (Duke of Cheng) to lead a Ming invasion, while also appointing Marquis Zhang Fu and Marquis Mu Sheng as second in command in this military campaign.
Split into simpler sentences: In July 1406, the Yongle Emperor appointed Duke Zhu Neng (Duke of Cheng) to lead a Ming invasion. At the same time, he also appointed Marquis Zhang Fu and Marquis Mu Sheng as second in command in this military campaign.