A fox invites a crane to dinner --- soup in a flat dish --- crane returns hungry --- decides to teach him a lesson --- invites the fox --- food in a narrow necked jar --- fox returns hungry --- Moral.
Once a fox requested a crane to dinner. But he prepared a dupe of his guest by putting some soup before him in a plane plate. The crane goes back home without intake anything. He, therefore, determined to teach the fox a lesson.
After some days, he requested the fox to dinner. But he set before his guest, some boiled rice in a slim necked pot. The fox was not capable to eat anything and go back home full of bitter disappointment.
Moral: Do unto others, as you would be done by. (Or) As you sow, so will you reap.