Thin wood
It is a Chinese idiom. Pinyin is mi á NL ì B ó C á I, which means little power and no talent. It comes from the biography of Yan Zhuzhuan in the history of Han Dynasty.
Idiom usage
He is weak in strength, weak in body and ill in nature. (Li Dongyang, Ming Dynasty)
The origin of Idioms
Ban Gu's Han Shu Yan Zhu Zhuan in the Eastern Han Dynasty said, "Yue people are weak and can't fight on land."
Thin wood
Be generous in correcting mistakes - gǎi guò bù lìn
Be faithful to the new and neglect the old - dǔ xīn dài jiù