1. Go to a drugstore or clinic and buy a "noise canceller", usually 19-39 yuan, and put it in your ear to block out the sound.

2, homemade cotton balls are stuffed in the ears, and the ears are uncomfortable after a long time.

Call the front desk of the hotel and complain that the next-door neighbor disturbed your rest. You have the right.

Some hotels have poor sound insulation. If you can't stand it, you can change to another one. Many hotels have good sound insulation.