The place where the imperial guards were stationed was close to the outer wall of the Imperial City. There were 3,000 elite imperial guards stationed inside, working in three shifts to protect the safety of the palace.
The center of the imperial guards's camp was the Marquis of Yun Ning Estate, where the deposed emperor of Great Wei was placed under house arrest.
Ye Jingtang and Dongfang Liren arrived near the Marquis of Yun Ning Estate. Together with constables of the Black Office, they checked the surrounding environment and found no traces of tunnels. But for safety reasons, Dongfang Liren still ordered that the deposed emperor be moved to a nearby residence and be strictly guarded by the imperial guards. Then she secretly dispatched people from the Black Office.
Dongfang Liren didn't arrange the defenses with great fanfare. After all, she only knew the general intentions and didn't have any evidence.