How to press the elevator button (it is rare to make a joke when taking the elevator)

Look at the answers upstairs. I'm confused. Are you so annoyed with such a simple question? Let me give you a brief answer.

1。 The first thing is to get on the elevator. If you are on the 1 floor, you will see the (▲) button, just press it.

2。 If you are in the middle layer, there will be ▲▼ up and down respectively. If you want to go up, just press it. If you want to press it, just press it.

3。 When the elevator is not closed, press ▲▼ to open the door immediately (when it is about 5 cm away from the door).

If you wait for someone in the elevator, there will usually be someone waiting inside (to open the door). Just press it, or hold it? (stands for closing the door immediately) If there is no one, just press it.

5。 When the elevator is going up or down, you just need to press the button to wait, and the result is the same as pressing the button.