墨守成规

wǒ men yào yǒng yú chuàng xīn bù yào mò shǒu chéng guī

我们要勇于创新，不要墨守成规。

We should dare to be creative instead of moving/staying in a rut.

tā shì yī gè mò shǒu chéng guī de rén

他是一个墨守成规的人。

He is a routier.

zhè jiù shì mò shǒu chéng guī bù yuàn jìn bù

这就是墨守成规，不愿进步。

This was a refusal to change, to make progress.

tā dà xiào qǐ lai rán hòu xié yǎn kàn le kàn zhè gè mò shǒu chéng guī de hù shi

她大笑起来，然后斜眼看了看这个墨守成规的护士。

She laughed, then looked sideways at this stodgy nurse.