In the "Jianghu Hongchen" plot in the game, find the secret rockery of Wudingfang Wang Erjiao Shop, which is the entrance to the secret room.
Before entering the secret room, you need to align the mouth of the upper bowl with yourself, with the center of the bowl facing to the left, and the bottom of the lower bowl facing inward. Unlock the mechanism to enter the secret room.
After entering the secret room, unlock the mechanism and open the treasure chest.
Finally, the obtained Yanling lancet was handed over to Mu Yunniang for identification. Mission accomplished!
Although the task may not seem difficult, it still takes some time and patience to complete. When unhooking the mechanism, pay attention to the direction of the bowl mouth to ensure correct operation. In addition, before giving it to Mu Yunniang for identification, you can try to use a lancet to confirm its quality and attributes.