keep under observation
Observe quietly, Chinese idiom, Pinyin is j ì nggu ā nm ò ch á, meaning silent, careful observation. It comes from Lu Xun's "pass" at the end of qijieting's essays.
The source of the idiom is Lu Xun's "pass" of "pass" at the end of qijieting's Essays: "for example, a painter's painting of characters is also a silent observation, familiar with the heart, and then concentrated on thinking, and at a stroke."
keep under observation
be filled with righteous indignation - nù qì tián xiōng