从难从严 Origin — Chinese Character Wiki

cóngnáncóngyán

demanding and strict

从從 cóng verb

to comply with

To obey; to follow a principle, rule, or custom; to listen to
难難 nán adjective

difficult

difficult; hard to do; troublesome; not easy; problematic; the opposite of 容易 róngyì
从從 cóng verb

to comply with

To obey; to follow a principle, rule, or custom; to listen to
严嚴 yán adjectiveadverb

strict

strict; rigorous; stern