Black Myth Wukong : Cyan Loong 

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Location: Chapter 3 - Bitter Lake - Turtle Island: This requires the Loong Scales from Chapter 2. After you got them, go to Turtle Island. To the right of this shrine, go to the back right corner of the island to find a small dragon statue sitting at the edge. When approaching it you will get a cutscene and it transforms to a living dragon, he's this boss. Only spawns if you have the Loong Scales in your inventory.