To study and think deeply
Dizhiyansi, a Chinese idiom, Pinyin is d ǐ zh ì y á ns ī, which means to concentrate and study deeply. It's from Strange Tales from a lonely studio Hu siniang.
Idiom usage
Used as a predicate or attribute; used for thinking
The origin of Idioms
In Pu Songling's strange tales from a lonely studio Hu siniang of the Qing Dynasty, it is said that "Cheng enters Wei, and he is determined to study and think, so as to sell it."
To study and think deeply
twist another around one 's little finger - gǔ zhǎng zhī shàng
cannot bear to think of the past - bù kān huí shǒu
pay attention to one 's own moral uplift without thought of others - dú shàn yī shēn
one 's temper and nature are in accord with someone - yì qì xiāng tóu