循规蹈矩

to follow the compass and go with the set square (idiom); to follow the rules inflexibly / to act according to convention

to follow / to adhere to / to abide by

variant of 規|规[gui1]

compass / a rule / regulation / to admonish / to plan / to scheme

to tread on / to trample / to stamp / to fulfill / Taiwan pr. [dao4]

variant of 矩[ju3]

carpenter's square / rule / regulation / pattern / to carve