to swallow ancient learning without digesting it (idiom)
to be pedantic without having a mastery of one's subject
Definitions (粵典–words.hk)
形容詞
頑固守舊,唔識變通或者接受新嘅事物 stubborn; way too conservative
李伯咁食古不化, 冇人同佢相處到。
李伯咁食古不化, 冇人同佢相处到。
lei5 baak3 gam3 sik6 gu2 bat1 faa3, mou5 jan4 tung4 keoi5 soeng1 cyu5 dou2. Old Mr. Lee is so stubborn that no one can get along well with him.
Definitions (Wiktionary)
phrase, idiomatic
to rigidly adhere to old methods or styles without being flexible (syn.) 唔化