Today I read the story of The frog prince. It made a strong impression on me.
A frog promised that it would help a princess to fetch a golden ball which rolled into a well. The frog asked the princess to be his good friend, and the princess agreed orally. But she felt it was too ugly. After the frog fetched the ball, the princess refused to be its friend. The king knew that educated his daughter must keep her words. Then the frog prince and the princess became friends and it changed to a handsome prince. Finally, they married.
This story told us: we must keep our words. To be a believable person, we’ll get our happiness.