1 (wiktionary) 2 (zh.wikipedia) 3 (en.wikipedia) 4 (glosbe)

Compounds Expand your vocabulary by studying more complex words built by the 'core words'.

CORE WORDS

HSK 1.0 (1992)
Big5
Gb
Pin
Eng

C
前後

前后

qian2hou4

in front of and behind/ around/ about/ altogether

前  前 in front, forward / preceding
【◎Fix:◎後;◎后】后 queen, empress, sovereign / (simp. for 後) behind, rear, after

HSK 2.0 (2010)
Big5
Gb
Pin
Eng

HSK 3.0 (2022)
Big5
Gb
Pin
Eng