步罡踏斗

bù gāng tà dǒu

to worship the astral deities (idiom, refers to Daoist astrology)

步

bù

a step

罡

gāng

stars of the Big Dipper that constitute the tail of the dipper

踏

tà

to tread

斗

dǒu

abbr. for the Big Dipper constellation 北斗星[Bei3 dou3 xing1]