What to do if the images of the Xiaomi Smart Projector L1 are blurry?

If the images of the Xiaomi Smart Projector L1 are blurry, please refer to the following details:
1. If all interfaces (including fonts, images and software interfaces) are blurred, please use the focus wheel to adjust the clarity of the picture;
2. If some of the pages are blurred, it will be a UI problem. It is recommended that you check other pages;
3. If the video is blurred, you can try to switch the video resolution, or the video itself has poor picture quality;
4. If the interface is blurred after the projection is switched to a set-top box or an external HDMI device, please check the relevant settings of the set-top box or external HDMI device (such as output resolution).