Correct

自下而上

/ zì xià ér shàng / 
Strokes

Definition

bottom-up

Example

Definition

from below; from bottom to top

1
Zìxiàérshàng
自下而上
de
的
jiāndū
监督

supervision from below

2
Zìxiàérshàng
自下而上
dì
地
tuījiàn
推荐

recommend sb from the grass roots to the top