In the fourth year of Chui Gong (688), King Langya, the governor of Bozhou, raised an army to oppose Empress Wu's rule. Li Zhen, the governor of Yuzhou, raised troops to respond. It was Prime Minister Zhang Guangbi who defeated Li Zhen, the king of Yue. However, the soldiers relied on their merits and extorted money. Di Renjie angrily accused Zhang Guangbi of killing and surrendering soldiers in order to claim military merit. Zhang Guangbi had nothing to say to him, but he still held a grudge in his heart, and even made rude remarks to Di Renjie. Di Renjie was demoted to Luoyang Sima. When he went to Luoyang, a strange case led to a strange incident.
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