When Simba discovered that he was controlled, it was too late.
Asser brought along Shreev as they appeared in front of the riders. One of the riders was forced to strip in order for Shreev to wear his costume while Asser hid in another rider's clothing. The flying riders made a turn and flew towards the Door of Everlasting Life.
Asser controlled the riders' legion and charged headlong into the door with dark swirling vortex. He had entered the interior of the fortress.
Zhao Yao hid within the Dimension Portal as he gazed at the dark door for half a day and hesitated whether to enter.
Asser must be very familiar with his opponent to dash headlong into the door.
Zhao Yao was not aware of the supercat behind the Door of Everlasting Life. Nobody knew what preparations Asser had done and what kind of superpower to expect.
He decided not to intrude into unfamiliar superpower realm.