钻坚仰高 (鑽堅仰高) zuān jiān yǎng gāo

zuān jiān yǎng gāo set phrase looking up to it, it gets higher; boring into it, it gets harder (from Analects); to delve deeply into one's studies
Domain: Idiom 成语 , Subdomain: , Concept:
Notes: (CC-CEDICT '鑽堅仰高')