This painting is discounted because of a paper flaw. In this case, it's an extra fiber (possibly from a glue brush used in the thickening process) is stuck within the layers of paper.

Three Strangers Sharing Knowledge

This painting depicts the ancient Chinese philosophy that even when people who don't know each other come together, they can learn from each other.

One person must be the teacher and others learn. And in turn, the others become the teacher of the knowledge they posses.

It is important to remember that we all have something to teach, and we all have something to learn as well.