Explode the giant crystal at the mine shaft. Break crystals for crystal shard (purple rarity quest item). Create spinach pie (2 spinach, 2 red wheat). In a hidden area across from the rhino world boss, speak to the man and get the refined crystal. Go back to the mine entrance and interact with the laser generators, the order is 2, 1, 3 going towards the back wall. Around halfway down this guide: https://www.taptap.com/topic/19813091
North coast off the snow region there is a circle shaped secret base (664, -1236). Passcode is 7092. Explore the area without being detected by security.
Box in snow map near the broken bridge (938, -403)
Defeat Named mobs (orange name tag elite monsters) at these locations https://imgur.com/a/qP7ImzK