The tongue is tight lipped
It's a Chinese idiom. Pinyin is Z é sh é Ji ā NCH ú n, which means to bite the tongue and shut up. It's used to describe being silent. From the book of Sui, biography of Wang Xiaoji.
Idiom explanation
"齰" means Z é. Lip, the same as "lip".
The origin of Idioms
According to the biography of Wang Xiaoji in the book of Sui Dynasty, "in Kuang's arms, the ice and fire burn the cream, and the wind and frost invade the bone marrow. It's cool for Anke to keep his mouth shut, swallow his breath, groan and endure bitterness."
The tongue is tight lipped
aged and greatly honoured for one 's virtues - nián gāo dé shào
agree without prior without previous consultation - bù móu ér hé