Does the Xiaomi Compact Hair Dryer H101 make any noise when in use?

There are several sources of sound when using the Hair Dryer: the sound generated by the motor and fan blades running at high speed, and the sound generated by the high speed airflow through the air duct. With a 20,000rpm high performance motor, wind speeds of up to 15m/s can be achieved and a certain amount of noise is normal in everyday use. Generally speaking, a relatively stable and regular sound is a normal sound; on the contrary, an unstable, irregular and relatively sharp high-frequency sound is an abnormal phenomenon, please dismantle the back cover of the detachable blower after the equipment is disconnected and clean the dust particles on the metal wind net and other foreign substances inhaled before use.