飞速发展 fēi sù fā zhǎn

DEFINITIONS

  1. rapid development; extremely fast growth or progress

CHARACTERS

飞 fēi
HSK 1
fly; go quickly; dart; high
速 sù
HSK 4
quick, prompt, speedy
发 fā
HSK 3
issue, dispatch, send out; hair
展 zhǎn
HSK 4
open, unfold; stretch, extend