A frog hops in a shallow well. He likes his life in the well and is content until one day when a sea turtle crawls to the well, the frog invites him to come into the water to play splashing game. The sea turtle turns down his invitation because he says there is a huge ocean water waiting to swim in and would be more fun. The frog is shocked that his wonderful world in the well is considered too small.

"The frog in the well" is a frequently used idiom in Chinese language to describe someone's lack of exposure to a larger world.