Black Myth Wukong contains a secret area in Chapter 3 called Mount Mei. This is the best hidden area in the game as it requires finishing all other Secret Areas first and doing the Treasure Hunter’s Questline. This area also leads to the Secret Ending.

How to Unlock Secret Chapter 3 Area “Mount Mei”:

1. Finish Chapter 1 Secret Area
2. Finish Chapter 2 Secret Area
3. Finish Chapter 4 Secret Area
4. Finish Chapter 5 Secret Area
5. Finish Chapter 3 Treasure Hunter Questline
6. Go to Chapter 3 > Pagoda Realm > Snow-Veiled Trail: To the left of this shrine go down the snowy path, across the wooden bridge, then follow the path to the end until you reach a big gate. Enter the gate to enter a hall called ‘The Great Pagoda’. Talk to the NPC up the stairs. It gives you a cutscene, afterward you automatically arrive in Mount Mei secret area. Go up the mountain path to reach the Mount Mei shrine.

Beat the boss in this area and then defeat the Chapter 6 endboss again to trigger the Secret Ending.