How can I adjust the screen brightness of UNIHIKER

Q How can I adjust the screen brightness of UNIHIKER?How to adjust the screen backlight of Unihiker? How to turn off the screen?
A Unihiker's system provides a command to adjust the backlight: brightness xxx. For example, to set the brightness to 50%, simply input the command brightness 50 in the terminal. Please note that to prevent mistakenly assuming the screen is damaged after turning off, the brightness adjustment will reset after restarting Unihiker.