idiom
Keep your friends close and your enemies closer
保持与朋友的良好关系非常重要,但理解你的敌人也同样重要。
Meaning
It's important to maintain good relationships with your friends, but it's equally important to understand your enemies.
Example
He always watches his competitors carefully because he believes in **keeping your friends close and your enemies closer**.
他总是小心地观察竞争对手,因为他相信**保持朋友在身边,敌人更靠近**。