How to use the basin button in this hotel? I can't press it, and I can't press it.

There are two common ways to cover the hotel sink. One is pop-up. If you press it like a button, it will pop up at a certain distance, so there will be a gap and water will flow down. The second is the flip cover type, in which a shaft is fixed in the middle of the cover, and the edge (one of the two sides) is pressed and unscrewed. If you press hard and it doesn't bounce off, then push hard again, otherwise it won't work. It's the second way, and then it's tight Throw it hard in your hand with the disposable toothbrush handle of the hotel. The second way is to use the toothbrush handle instead of the handspring, which is more powerful.