Tian Lingzi
Later that year, after Huang had been defeated and Tang forces recaptured Chang'an, Emperor Xizong was beginning to prepare for a return to Chang'an. At that time, Zheng was again chancellor, but was in sharp disagreement in many matters with the powerful eunuch Tian Lingzi and Tian's brother Chen Jingxuan the military governor of Xichuan Circuit (西川, headquartered at Chengdu). In order to get Zheng to remove himself, Tian and Chen had Li Changyan submit a petition stating, "The soldiers are being troubled. When Zheng Tian follows Your Imperial Majesty back to the capital, he should not pass here." Zheng, seeing the nature of the threat, resigned.