自下而上

zìxiàérshàng
(idiom) from bottom to top; from the grass roots up; bottom-up

CEDICT

Homographs

自下而上 zìxià'érshàng

Entry Composition

1 自 zì
  1. (bound form) self; oneself
  2. from; since
  3. naturally; as a matter of course
2 下而上 xiàérshàng bottom to top (of listing)