What are the usage tips of the Xiaomi Smart Evaporative Humidifier?

For your reference, here are the usage tips for the Xiaomi Smart Evaporative Humidifier:
1. Ensure there are no obstructions around the air outlets and inlets to maintain a smooth airflow;
2. For healthy usage, it is recommended to clean the water tank weekly, clean the filter every two weeks, and regularly use citric acid to clean the water circuit as detailed in the user manual;
3. To maintain the integrity of the machine and ensure safety, do not add water above 40°C to the tank, or add essential oils, aromatherapy liquids, or other additives to the humidifier;
4. It is normal for the remaining water in the tank of an evaporative humidifier to turn yellow. Regularly clean the tank, and use it with peace of mind.