Thank you for your support of Xiaomi products. All products undergo strict professional inspection before leaving the factory, so you can use them with confidence. This is a normal system stability issue and does not affect your use.
If black flashes occur frequently, you can refer to the following steps:
1. You can ask after-sales service to handle it;
2. Reboot the phone to clear up any temporary software glitches;
3. You can adjust the refresh rate settings by going to [Settings] >> [Display & brightness] >> [Refresh rate] >> [Custom] >> tap [Refresh rate] and choose 60Hz. This can help reduce flickering in some apps;
4. Update your apps and the HyperOS system to the latest versions.
Does it help?