wú yá
toothless
(fig.) powerless
ineffectual
weak
Liù Tāo
”Six Secret Strategic Teachings”, one of the Seven Military Classics of ancient China 武經七書|武经七书[Wǔ jīng Qī Shū], attributed to Jiang Ziya 薑子牙|姜子牙[Jiāng Zǐ yá]
Huáng Shí gōng Sān Lüè
”Three Strategies of Huang Shigong”, also known as Taigong Bing Fa 太公兵法[Tài gōng Bīng Fǎ], one of the Seven Military Classics of ancient China 武經七書|武经七书[Wǔ jīng Qī Shū], variously attributed to Jiang Ziya 薑子牙|姜子牙[Jiāng Zǐ yá], Huang Shigong 黃石公|黄石公[Huáng Shí gōng] or an anonymous author