The nine methods of brushwork in Chinese calligraphy, attributed to the Han dynasty scholar 蔡邕 cài​yōng; these rules include techniques such as concealing the tip and rapid strokes. Also called 九势八字诀 jiǔ​shì​bā​zì​jué.

The Chinese character for the number eight; anything shaped like the character eight such as eyebrows or a mustache

(bound form) rhymed or pithy formula used to help with memorizing a subject