yínháng, yīyuàn hé zhèngwù chuāngkǒu jiào hào shí, shēngyīn hé píngmù yào yīqǐ kàn

银行、医院和政务窗口叫号时，声音和屏幕要一起看。

When taking a number at banks, hospitals, and government service windows, you need to watch both the sound and the screen.