What's going on with 百度's image redirection prompt?

This is because Hong Kong and Taiwan hosts are slower to access in China. To improve access speed, our company has added domestic caching for images, which helps speed up website loading. It has no adverse impact on search engines or user access. The image URL address will change to *.img.800cdn.com/image.jpg.

Some detection tools such as Baidu will consider 301 to affect access speed, but in fact, we 301 images to domestic servers to increase access speed.