This is usually because the image file is large, and the system displays a preview version by default.
Preview Mechanism: To save your data and ensure smooth scrolling in the chat interface, MPChat loads a compressed preview image first, which may appear slightly blurry.
How to View HD Image: Please tap "Full Image" on the picture.
Loading: After tapping, the system will start downloading the full high-definition original image. Please wait a few seconds depending on your network connection; the image will become clear once loaded.