stick to what one says
As a Chinese idiom, the Pinyin is y ǎ OD ī ngji á OTI ě, which means that teeth can break iron nails and means strong will. From the water margin by Shi Naian of Ming Dynasty.
Idioms and allusions
The ninth chapter of Shi Naian's outlaws of the marsh in Ming Dynasty: "the people who come and go are all iron men who bite nails; the people who come and go are nothing but people who shed blood and dissect the liver."
Word usage
It means strong will.
Examples
Every word is true. The 67th chapter of Chen Ruisheng's rebirth fate in Qing Dynasty
Chinese PinYin : yǎo dīng jiáo tiě
stick to what one says
not to cause the slightest damage to the people. bǐ chàng bù jīng
change constantly like cloud and wave. bō jué yún guǐ
have relations with a foreign country. lǐ tōng wài guó