害人之心不可有，防人之心不可无。
The heart should not harbor harmful intentions, but one should also not be without vigilance against others.
嫉妒是七宗罪之首。
Jealousy is the root of all sins,
而嫉妒，很大程度上是来自熟人。
and jealousyoften stems from acquaintances.
低调，才是自己最好的保护色。
Being low-key is the best means of self-protection.