天壤之别

lit. as different as sky and earth (idiom) / fig. night and day difference / opposite extremes / a world of difference / a far cry from

day / sky / heaven

soil / earth

(possessive particle, literary equivalent of 的[de5]) / him / her / it

surname Bie

to leave / to depart / to separate / to distinguish / to classify / other / another / don't ...! / to pin / to stick (sth) in / (noun suffix) category (e.g. 性別|性别[xing4 bie2], 派別|派别[pai4 bie2])

to make sb change their ways, opinions etc