àn​jiàn​nán​fáng

it is hard to guard against an arrow shot from the dark

Senses

暗箭难防/ 暗箭難防 àn​jiàn​nán​fáng it is hard to guard against an arrow shot from the dark

It is difficult to defend against hidden attacks or underhanded schemes. This idiom is often used alongside 明枪易躲 míng​qiāng​yì​duǒ.

References

see 暗箭难防/暗箭難防 明枪易躲/明槍易躲