蹈常袭故

dǎocháng-xígù

[go on in the same old way; be a slave to old methods of doing things; follow the conventional tradition] 墨守成规, 沿用旧法。 指照老规矩办事

后之君子, 蹈常而袭故, 惴惴焉惧不免于天下。 --宋·苏轼《伊尹论》