Stroke order
Show the animation Stroke data from Make Me a Hanzi, derived from the Arphic PL fonts under the Arphic Public License.
Show the animation 
Stroke data from Make Me a Hanzi, derived from the Arphic PL fonts under the Arphic Public License.
How it used to be written
不
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Oracle bone script 商 -
Clerical script 東漢 - See all 21 forms
错
These are the forms of 錯, the traditional character: 错 is a twentieth-century simplification, found in no ancient corpus.
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Warring States script 戰國.秦 -
Clerical script 東漢 - See all 6 forms
Forms, sources and dates: the 字形演變 database of 小學堂, Academia Sinica, public domain (CC0).
Examples
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不论如何，我认为它不错。
In spite of everything, I think it's not bad.
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不错。
Not bad.
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今晚的天气不错。
The weather is nice tonight.
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以初学者来说，你打网球已经算是打得不错了。
You are a good tennis player, as beginners go.
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她的新书卖得不错。
Her new book is selling well.
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妈的！真不错！
Damn! It's not bad!
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款式很不错，不过有没有别的颜色？
The style is nice, but do you have it in a different color?
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考虑到他的年龄，他看起来挺不错。
He looks good for his age.