1. Antidrying: After playing the Hulusi, do not store it in the case immediately. Let it airdry first. If used at school or outdoors, it is recommended to take out the Hulusi and hang it upside down or place it upside down after returning home. Avoid storing it in the case while it still has moisture. 2. Care instructions: The way to maintain the Hulusi is to hang it upside down after playing, with the mouthpiece facing downward, and avoid storing it in the case. The case should only be used for transportation. Keep it away from heat sources like heaters and avoid direct sunlight. 3. Antioxidation and antidebonding: While playing, turn the Hulusi upside down and shake it gently every 30 minutes or between songs to remove internal moisture. Otherwise, the reed may detach or oxidize prematurely. 4. Easy to play: This Hulusi is crafted by professionals who repeatedly tune it to ensure every note sounds clearly, allowing you to play with ease.