First enter the empty realm in the moon shop (that is, keep 9 points), and after keeping it, a new portal will be opened in front of the original portal.
Enter the void trajectory through the portal.
After activating four deep-space signals similar to Mi Dieguan, a deep-space portal will appear, which will enter and reach the planetarium of the hidden scene.
After going in, there will be a boss at the same level as Mi Da. One * * * will kill three times. There will be cracks in the first two kills. Crack will be a parkour. The third time, the virtual spirit will appear in the portal, and the portal will be cleared to unlock the new character.
The new mode Void Arena can also be unlocked after 50 waves.