Wei Zhongxian
All of the Taichang Emperor's sons died before reaching adulthood except for Zhu Youxiao and Zhu Youjian. Zhu Youjian grew up in a relatively lonely but quiet environment. After the Taichang Emperor died in 1620, Zhu Youjian's elder brother Zhu Youxiao succeeded their father and was enthroned as the Tianqi Emperor. He granted the title "Prince of Xin" (信王) to Zhu Youjian and posthumously honoured Zhu Youjian's mother, Lady Liu, as "Consort Xian" (賢妃). Fearing the court eunuch Wei Zhongxian, who controlled the Tianqi Emperor, Zhu Youjian avoided attending imperial court sessions under the pretext of illness until he was summoned to court by his brother in 1627. At the time, the Tianqi Emperor was gravely ill and wanted Zhu Youjian to rely on Wei Zhongxian in the future.