回天之力 power to turn the heavens around
Explanation
比喻不懂事物已发展变化而仍静止地看问题，缺乏变通能力。
It is a metaphor for not understanding that things have changed and still looking at the problem statically, lacking the ability to adapt.
Origin Story
战国时期，一位楚国人乘船过江，不慎将佩剑掉入水中。他立即在剑落水处在船舷上刻下记号，以为船靠岸后就能找到宝剑。船靠岸后，他依照记号下水寻找，却一无所获。原来，船停靠岸边后，剑早已随水流漂走了。
During the Warring States period, a man from Chu was crossing a river by boat when he accidentally dropped his sword into the water. He immediately made a mark on the side of the boat where the sword fell, thinking that he would be able to find the sword once the boat reached the shore. After the boat docked, he went into the water to search according to the mark, but found nothing. The sword had already floated away with the current.
Usage
常用作谓语、宾语；形容力量巨大，能扭转乾坤。
Often used as a predicate or object; describes a huge force that can turn the tide.
Examples
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他这种做法简直是刻舟求剑，完全不考虑实际情况。
tā zhè zhǒng zuòfǎ jiǎnzhí shì kè zhōu qiú jiàn, wánquán bù kǎolǜ shíjì qíngkuàng。
His approach is simply to stick to the old ways, just like the saying 'to seek a sword by carving the boat'.
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面对不断变化的市场，我们不能刻舟求剑，要及时调整策略。
miànduì bùduàn biànhuà de shìchǎng, wǒmen bù néng kè zhōu qiú jiàn, yào jíshí tiáozhěng cèlüè。
In the face of a constantly changing market, we must not be rigid, but must adjust our strategies in a timely manner.
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学习也要与时俱进，不能刻舟求剑，墨守成规。
xuéxí yě yào yǔ shí jù jìn, bù néng kè zhōu qiú jiàn, mòshǒu chéngguī。
Learning must also keep pace with the times and not stick to the old methods, but to continue to develop.