显学

dào jiā xué shuō yě céng jīng shì zhōng guó gǔ dài de xiǎn xué zhī yī

道家学说也曾经是中国古代的显学之一。

Taoism was once a famous school in ancient China.

yǒu qīng yī dài xùn gǔ kǎo jù zhī xué chéng wéi xiǎn xué

有清一代，训诂考据之学成为显学。

In the Qing Dynasty, textology became a famous study.