
The mechanism can be reactivated after completing the quest, which initiates the same challenge. The quest can be activated by doing any of the three steps which grants a fragment. The Qingce Cache challenge can be initiated in Co-op Mode. Completing this quest grants the Wonders of the World achievement " Crouching Dragon, Hidden Chi.".
Head to Qingce Village and report to Granny Ruoxin. There is also a Geoculus and a Seelie in the room. Continue towards the back of the room to find 1 Luxurious, 1 Precious, 2 Exquisite, and 2 Common Chests. There is a pool of water in the room so you can use that to cause elemental reactions on the enemies (Frozen, Electro-Charged, Vaporize). Your goal is to prevent them from destroying the structure. After interacting with the Qingce Cache mechanism, waves of monsters will attack while rocks fall down from the ceiling, dealing AoE Geo DMG. Treasure Hoarders spawn as you get closer to the mechanism in the center of the room. Two Common Chests can be found inside the vault. Activate the statues in order, starting from the one facing Stormterror's Lair as the 1st, then go clockwise for the 3rd, 4th, and 6th. Go to the highest point of Qingce Village to search for fragments. (the directions listed in the "Incomplete writing"). Activate the statues in order: North, South East, North West, North East, South West. Search for fragments near the Geo Statues. Ask the locals of Qingce Village about the fragments. Open the Precious Chest that spawns close to the "Incomplete writing".
There will be large chunks of amber near them
Find the 3 strange stones near the ruin. Defeat the Ruin Hunter in the ruin then read the "Incomplete writing". Start the quest by talking to Yan'er near the ruin in Bishui Plain.