Catfish on bamboo pole
Catfish on bamboo pole is a Chinese idiom, Pinyin is Ni á NY ú sh à ngzh ú g à n, which means that catfish can climb on bamboo pole, but it is sticky and scale free, so it is difficult to climb. Later, it is difficult to rise. From: records of returning to the fields by Ouyang Xiu of Song Dynasty.
Idiom explanation
Explanation: it is said that Silurus asotus can climb a bamboo pole, but Silurus asotus is slippery and scaleless, so it is difficult to climb a pole. Later, it is difficult to rise.
Idioms and allusions
[source] Ouyang Xiu's return to the fields in Song Dynasty: "when you are an official, what's the difference between walking fish on a bamboo pole?"
Catfish on bamboo pole
there are things and laws to govern them - yǒu wù yǒu zé
be perfectly calm and collected in commanding the army - zhǐ huī ruò dìng
heroically fight the enemy to distinguish oneself in action - shā dí zhì guǒ