来者不善，善者不来 (來者不善，善者不來) láizhě bù shàn, shàn zhě bù lái

láizhě bù shàn, shàn zhě bù lái phrase He who comes is surely ill-intentioned, no-one well-meaning will come .; Be careful not to trust foreigners.
Domain: Proverb 谚语
Notes: (CC-CEDICT '來者不善，善者不來')