不用谢。

Using it is incredibly simple. When you hear 谢谢, you immediately fire back with 不用谢. You can say it with a smile and a slight nod. It works perfectly in almost every daily interaction. At a restaurant, if the waiter thanks you for your patience, say it. If you hold a door open, say it. It is short, punchy, and very easy to remember. Don't overthink the grammar; just treat it as a single unit of politeness.

Use it in neutral or slightly formal settings. It is perfect for talking to shopkeepers, taxi drivers, or colleagues. It feels balanced—not too stiff, but not too lazy. If you are at a business meeting and pass a pen, this is your best friend. If you are texting a new acquaintance, it shows you have good manners. It’s the safe 'middle ground' of Chinese responses.

Avoid using it with your absolute best friends or very close family. Between 'besties,' saying 不用谢 can actually feel a bit distant. It’s almost too polite, like you’re treating them like a stranger. In those cases, a casual 没事 (no biggie) works better. Also, don't use it if someone is offering a massive, life-changing favor. In those deep emotional moments, a more heartfelt response is usually required.

Chinese culture places a huge emphasis on 'mianzi' or face. By saying 不用谢, you are effectively saying the favor was easy for you. This makes the other person feel less 'indebted' to you. It’s a way of maintaining harmony without making a scene. Historically, being overly formal with close friends was seen as 'waqi' (acting like an outsider). So, this phrase sits in that sweet spot of general social grace.

You will often hear 不客气, which means 'don't be a guest.' It’s virtually interchangeable with 不用谢. Some people might just say 不用 if they are in a rush. In Southern China or Taiwan, you might hear 不会, which literally means 'it won't happen' (as in, no need for thanks). If you want to sound extra chill, try 没事 or 没事儿. All of these keep the vibe relaxed and friendly.