には

A noun or phrase + には can be used to describe purpose in a general statement. These statements are often used to express judgment on the topic's effectiveness, necessity, etc. It can be translated as "to", "in order to", "for", or "when."

風邪の予防には、ビタミンＣをたくさん取って、よく寝るのが効果的です。
For cold prevention, it's effective to take lots of vitamin C and get good rest.

学校のあとにリーさんの家へ行くには、バスがもっと安いと思う。
When going to Lee-san's house after school, I think the bus is cheaper.

海外旅行には、このスーツケースを持って行くと便利ですよ。
For trips overseas, it's convenient to take this suitcase.

レストランで食べるには、静かに話したほうがいいんだよ。
When eating at a restaurant, you'd better talk quietly.