HSK 5
Míng qiāng hǎo duǒ, ànjiàn nán fáng.
It is easy to dodge a spear in the open, but hard to guard against an arrow from the dark.
HSK 7-9
Tā cóngbù zhèngmiàn gōngjī, zǒngshì fàng ànjiàn-shāngrén.
He never attacks openly - he always stabs people in the back.