What's wrong with Xiaomi's mobile phone news pictures being black and white?

This is the night mode of the mobile phone, which is designed to prevent the mobile phone from hurting the eyes at night. After the night mode is turned off, it can be changed back to black words on a white background. Click the "Settings" option of the news software and click "Theme" to cancel the night mode. When you use your mobile phone at night, you can adjust the brightness to the minimum by clicking the settings-display-brightness of your mobile phone, so that your eyes will be more comfortable and will not cause eye fatigue. This is the night mode of the mobile phone.