开天辟地 Create heaven and earth
Explanation
开天辟地是一个汉语成语，指的是古代神话传说中盘古氏开辟天地，开始有人类历史。后常比喻空前的，自古以来没有过的。
Kai Tian Pi Di is a Chinese idiom that refers to the ancient mythological legend of Pangu who created heaven and earth, marking the beginning of human history. Later, it was used to describe unprecedented, never-before-seen events.
Origin Story
相传天地初开之时，是一片混沌，像个巨大的鸡蛋，盘古便生活在其中。他挥舞着巨斧，将混沌世界劈开，清气上升化为天，浊气下降形成地。盘古为了支撑天地，便以天为顶，以地为足，日夜不停地撑着。就这样，盘古不知疲倦地撑了18000年，天地也逐渐变得宽广起来。最终，盘古精疲力尽，倒下身躯，化作了世间万物。他的头变成了高山，他的眼睛变成了日月，他的四肢变成了四极，他的血肉变成了土壤，他的筋脉变成了江河，他的头发变成了花草树木……这就是我们今天所见的世界。
It is said that in the beginning of time, the universe was a chaotic, giant egg in which Pangu lived. He swung his giant axe and split the chaotic universe, causing the light Qi to rise up into heaven and the heavy Qi to sink down to form the earth. To support heaven and earth, Pangu stood with heaven on his head and earth on his feet, pressing up and down non-stop. Thus, Pangu worked tirelessly for 18,000 years, pushing heaven and earth further and further apart. Finally, Pangu was exhausted and fell to the ground, transforming into all things in the world. His head became mountains, his eyes became the sun and moon, his limbs became the four cardinal directions, his flesh and blood became soil, his tendons became rivers, his hair became flowers, grass and trees ... This is the world we see today.
Usage
这个成语表示事物空前绝后，前所未有，常用于形容伟大事业，重大的变革等。
This idiom expresses that something is unprecedented and novel. It is often used to describe great achievements, significant changes, etc.
Examples
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这本小说开天辟地，创造了新的写作风格。
zhe ben xiao shuo kai tian pi di, chuang zao le xin de xie zuo feng ge.
This novel is groundbreaking, creating a new style of writing.
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他提出的方案开天辟地，史无前例。
ta ti chu de fang an kai tian pi di, shi wu qian li.
His proposal is unprecedented, a first in history.