井底之蛙，源于《庄子·外篇·秋水》中的一则寓言故事，成语“井底之蛙”和“坐井观天”均出自这则寓言，被用来比喻和讽刺比喻眼光狭隘且自以为是的人。
The frog at the bottom of the well is derived from a fable in “Zhuangzi · Waipian·Qiu Shui”. The idioms “frog at the bottom of the well” and “seeing the sky at the well” are both derived from this fable. They are used to metaphor and satirize the narrow-eyed and self-righteous people.
有一只青蛙长年住在一口枯井里。它对自己生活的小天地满意极了，一有机会就要当众吹嘘一番。有一天，它吃饱了饭，蹲在井栏上正闲得无聊，忽然看见不远处有一只大海鳖在散步。青蛙赶紧扯开嗓门喊了起来：“喂，海鳖兄，请过来，快请过来！”海鳖爬到枯井旁边。青蛙立刻打开了话匣子：“今天算你运气了，我让你开开眼界，参观一下我的居室。那简直是一座天堂。你大概从来也没有见过这样宽敞的住所吧？”
海鳖探头往井里瞅瞅，只见浅浅的井底积了一汪长满绿苔的泥水，还闻到一股扑鼻的臭味。海鳖皱了皱眉头，赶紧缩回了脑袋。青蛙根本没有注意海鳖的表情，挺着大肚子继续吹嘘：“住在这儿，我舒服极了！傍晚可以跳到井栏上乘凉；深夜可以钻到井壁的窟窿里睡觉；泡在水里，让水浸着两腋，托住面颊，可以游泳；跳到泥里，让泥盖没脚背，埋住四足，可以打滚。那些小虫子、螃蟹、蝌蚪什么的，哪一个能比得上我呢！”青蛙唾沫星儿四溅，越说越得意：“瞧，这一坑水，这一口井，都属我一个人所有，我爱怎么样就怎么样。这样的乐趣可以算到顶了吧。海鳖兄，你不想进去观光观光吗？”
海鳖感到盛情难却，便爬向井口，可是左腿还没能全部伸进去，右腿的膝盖就被井栏卡住了。海鳖慢慢地退了回来，问青蛙：“你听说过大海没有？”青蛙摇摆头。海鳖说：“大海水天茫茫，无边无际。用千里不能形容它的辽阔，用万丈不能表明它的深度。传说四千多年以前，大禹做国君的时候，十年九涝，海水没有加深；三千多年以前，商汤统治的年代，八年七旱，海水也不见减少。海是这样大，以至时间的长短、旱涝的变化都不能使它的水量发生明显的变化。青蛙弟，我就生活在大海中。你看，比起你这一眼枯井、一坑浅水来，哪个天地更开阔，哪个乐趣更大呢？”青蛙听傻了，鼓着眼睛，半天合不拢嘴。
There is a frog who lives in a dry well for many years. It is extremely satisfied with the little world of its own life, and will brag about it in public whenever it has the opportunity. One day, it was full of food, squatting on the well fence and being bored, suddenly saw a large turtle walking not far away. The frog hurriedly opened his voice and shouted: “Hey, Brother Haiyue, please come, please come!” Haiyue climbed to the dry well. The frog immediately opened the chatterbox: “You are lucky today. I let you open your eyes and take a tour of my bedroom. It is simply a paradise. You probably have never seen such a spacious residence before?”
The sea turtle probe looked into the well, only to see a muddy water covered with green moss on the shallow bottom of the well, and it smelled a pungent odor. The sea turtle frowned and quickly retracted his head. The frog did not pay attention to the sea turtle’s expression, and continued to brag, “I live here, I am very comfortable! In the evening, I can jump on the well rail to enjoy the cool; late at night I can go to sleep in the hole on the wall of the well; soak in the water. Let the water soak the armpits, hold the cheeks, you can swim; jump into the mud, let the mud cover the insteps, bury the four feet, and you can roll. Those little bugs, crabs, tadpoles, etc., which one can compare to me Yeah!” The frog spits and stars all around, and the more he speaks, the more proud he is: “Look, this pit of water and this well are all owned by me. I just do what I like. This kind of fun can be counted as the highest. . Brother Haibie, don’t you want to go sightseeing?”
Feeling the hospitality, the sea turtle crawled towards the well, but before the left leg could fully extend in, the knee of the right leg was stuck by the well rail. The sea turtle slowly backed away and asked the frog: “Have you heard of the sea?” The frog shook his head. The sea turtle said: “The sea and the sky are boundless. The vastness of the sea cannot be described by thousands of miles, and the depth cannot be expressed by the thousands of meters. Legend has it that more than four thousand years ago, when Dayu was the monarch, there were nine years of waterlogging and no sea water. More than three thousand years ago, in the era of Shangtang rule, eight years and seven droughts, the sea water did not decrease. The sea is so big that even the length of time and the changes in drought and flood cannot make its water volume change significantly. Frogs. Brother, I live in the sea. You see, compared to your dry well and shallow pit, which world is more open and which is more fun?” The frog was silly, his eyes bulging, and his mouth closed for a long time. .