Eight Principles of Yong

The Eight Principles of "Yong" (; , "eiji happō"; , "Yeongjapalbeop") explain how to write eight common strokes in regular script which are found all in the one character, (, "forever", "permanence"). It was traditionally believed that the frequent practice of these principles as a beginning calligrapher could ensure beauty in one's writing.
The Eight Principles are influenced by the earlier Seven Powers () by Lady Wei Shuo () of Eastern Jin. Publications on the Principles include:
Table of naming usages.
Note: － "Xié" is sometimes added to the 's strokes. It is a concave "Shù" falling right, always ended by a "Gōu", visible on this image.
CJK strokes.
In addition to these eight common strokes in , there are at least two dozen strokes of combinations which enter in the composition of CJK strokes and by inclusion the CJK characters themselves.