How to make Chinese painting clearer

First of all, the Chinese painting should be at least supported. If you don't support it, the surface is uneven, and the blank place is easy to be gray, so it is difficult to shoot well.

Before the shooting process, Chinese paintings should be hung on a flat wall. If there is no studio, you'd better choose a studio with top light, or shoot outdoors without direct sunlight.

When shooting, a tripod must be added to make the camera lens parallel to the picture to prevent deformation. As long as they are completely parallel, focus on the center of the lens.

If you have an exposure meter, you can measure the light of 50% neutral gray, based on this.

If you can do the above, and the details are not clear after painting, I can only suspect that you took it with a disposable camera, hehe.

It is best to use a professional camera, or at least a camera that can be used manually.

Good luck shooting.