故步自封　

◎ 故步自封 gùbù-zìfēng

[confine oneself to the old method;stand still and cease to move a step forward] 故步:舊時(shí)行步的方法。遵行舊時(shí)的步法而封閉自限。喻墨守成規(guī),不求進(jìn)步