pointedly criticize errors
Criticizing is an idiom, and its pronunciation is t ò ngxi à zh ē NBI ā n, which means criticizing mistakes sharply in order to correct them.
source
Fan Chengda of Song Dynasty wrote the poem "Xi Zhen Ge leaves Fang Daoshi bin Shi", which says: "when you talk bitterly, you will get three benefits from the end of the world."
Examples
Xu Dachun, a biography of art in the draft of the history of the Qing Dynasty, said: "being careful to ruminate is a bitter criticism for those who indulge in heresy."
pointedly criticize errors
lament to heaven and knock one 's head on earth - chuí tiān qiǎng dì
a slanderous tongue can burn up a city - chì shé shāo chéng
the mountains are high and the water wide - shān yáo lù yuǎn