In the state of Chu, there was a young warrior named Meng Ran.
楚国有个年轻武士，名叫孟然。
He had trained for many years and believed he was unbeatable.
他练武多年，自认为天下无敌。
One day, he heard of a great swordsman living outside the city.
一天，他听说城外有一位武功高强的大侠。
Unconvinced, he decided to challenge the swordsman.
他不服气，决定挑战这位大侠。
His friends warned him, "That man is very experienced. Be careful."
朋友劝他：“对方经验丰富，你要小心。”
But Meng Ran boasted, "My sword skills are unmatched! What is there to fear?"
孟然却得意地说：“我剑法无敌，怕什么？”
He took his sword and went to the swordsman’s home.
他带着长剑，来到大侠的住处。
The swordsman smiled and said, "Are you sure you want to fight?"
大侠听后，淡淡一笑：“年轻人，你确定要比试？”
Meng Ran charged forward, swinging his sword with great speed.
孟然拔剑冲上去，挥舞几招，动作迅猛。
But the swordsman dodged effortlessly, avoiding every strike.
大侠只是轻轻一闪，孟然的剑招全都落空。
With a simple push, the swordsman sent Meng Ran tumbling to the ground.
只见大侠随手一推，孟然便跌倒在地。
Shocked, Meng Ran realized he was far from being the best.
孟然惊讶不已，知道自己远远不是对手。
Feeling ashamed, he admitted, "I have overestimated myself."
他羞愧地说：“我太高估自己了。”
The swordsman helped him up and said, "If you lack strength, you must train harder."
大侠扶起他说：“年轻人，实力不够，就要多加修炼。”
From then on, Meng Ran trained diligently and stopped boasting.
从那以后，孟然认真练习，不再轻易自夸。
"Overestimating oneself" describes people who think too highly of their abilities and attempt things beyond their capability.
不自量力，形容人高估自己的能力，做超出自己本事的事。
