Lu Yao has a sesame seed.
Hold it in your mouth for fear of swallowing, put it in the palm of your hand for fear of dropping it.
He wrapped the sesame seed in silk and put it in a small treasure box made of platinum. But he was afraid that the treasure box would be stolen.
So, he locked the treasure box in a big treasure chest made of sandalwood. But he still felt that sooner or later he would be pried open.
So, he buried the treasure chest in, well, soil.
Then, this sesame seed.
It's moldy.
There was damp mold.
Mold.