焕然一新 brand new
Explanation
焕然：鲜明光亮的样子。改变旧面貌，出现崭新的气象。形容景象或事物面目一新。
Huanran: A bright and shining appearance. Change the old appearance and show a brand-new look. Describes a scene or thing that has a new face.
Origin Story
老旧的城墙已经斑驳陆离，城内街道也显得破败不堪，人们的生活也日渐困苦。然而，一位英明的君王继位后，他励精图治，大刀阔斧地进行改革，城墙重新修葺，焕然一新，城内街道也拓宽整洁，焕然一新，商铺林立，百姓生活也因此得到了极大的改善，呈现出一派欣欣向荣的景象，老百姓们都赞扬新君王的英明决策，国家因此也日渐繁荣昌盛。
The old city walls were dilapidated, and the streets inside the city were also dilapidated, and people's lives were becoming increasingly difficult. However, after a wise king ascended the throne, he worked hard and resolutely carried out reforms. The city walls were renovated and became brand new. The streets in the city were also widened and cleaned, shops lined up, people's lives were greatly improved, and a thriving scene was presented. The people praised the wise decision of the new king, and the country became more prosperous.
Usage
形容事物面貌全新，景象更新。
Describes something that has a completely new look, and a changed scene.
Examples
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经过重新装修，我们的办公室焕然一新。
jing guo chongxin zhuangxiu,women de bangongshi huanranyixin.
After the renovation, our office is brand new.
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这家老店经过翻修后，焕然一新，生意比以前更加兴隆了。
zhe jia laodian jingguo fanxiu hou,huanranyixin,shengyi bi yiqian gengjia xinglong le
After renovation, the old shop has been given a new look, and its business is more prosperous than before