Yan Wushi treasure

"Once there was a man who found a stone among a pile of gold and silver jewels.

But he refused to believe that it was just an ordinary stone. He thought that anything alongside the abundance of gold and silver must be valuable. So, he always carried it with him and even sought out many people to examine and polish it. However, without exception, each person told him that it was just an ordinary stone, nothing remarkable.

Finally, he accepted that, indeed, it was a worthless stone. But in his eyes, even if this was an ordinary stone, it was more valuable than any treasures of the world."

-Yan Wushi (Thousand Autumns chapter 90)