The Farmer and His Sons农夫和他的儿子们
A farmer who will pass away wants to impart his experience to his sons. So, he calls them in and says: my sons, I am dying. You go to the vineyard and search for what I have buried. The sons believe their father's words and think that some treasure must be hidden in the vineyard. After the father dies, they cultivate the vineyard but find nothing. However, that year, they harvested more grapes.
This story means: labor is the best treasure.