按部就班
àn​bù​jiù​bān

to follow the prescribed order

按部就班 àn​bù​jiù​bān
to follow the prescribed order
(idiom) to follow conventional procedures or work routines; to do things in a step-by-step manner according to principles; sometimes carries a negative connotation of sticking to old ways without innovation
to arrange writing by categories
(of writing) to organize the structure and wording of an essay or poem according to a set order or classification

Frequency
Movie subtitles
1.91 per million appears in 1% of films
Written text
1.39 per million

Sources
Frequency data
SUBTLEX-CHBCC Corpus (BLCU)