一个劲 一個勁
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.
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
一
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Oracle bone script 商 -
Clerical script 孫吳 - See all 14 forms
个
These are the forms of 箇, the traditional character: 个 is a twentieth-century simplification, found in no ancient corpus.
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Small seal script
劲
These are the forms of 勁, the traditional character: 劲 is a twentieth-century simplification, found in no ancient corpus.
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Warring States script 戰國.晉 -
Clerical script 東漢 - See all 7 forms
Forms, sources and dates: the 字形演變 database of 小學堂, Academia Sinica, public domain (CC0).