Where is the dark phantom of Pokemon, the Phoenix King?

Pokemon's Dark Phantom Phoenix King is in the Flame Mountain. The specific search steps are as follows:

1. First come to Lvyin Town and go to the Kalv Tunnel on the right, as shown in the following figure:

2. Walking out of the hole, I saw a pool beside me. I surf into the pool, and then climb the waterfall;

3. After arriving at the waterfall, I saw a hole facing me and entered the hole:

Fourth, continue to climb the waterfall by surfing and climbing the waterfall. There are two caves in front of the two waterfalls. The cave on the left is the cave where the Phoenix King is located:

5. Go up into the cave on the left, and the Phoenix King will fly down and enter the battle to capture the Phoenix King.