祝你好运！

Using this phrase is incredibly easy. You can say it as a standalone sentence. You can also send it in a text message. It works perfectly at the end of a conversation. If a friend is leaving for an interview, just shout it out! It’s like a verbal high-five before a big moment.

Use it whenever someone is about to do something stressful. This includes taking an exam or going on a first date. It's great for sports competitions too. If a colleague is giving a big presentation, drop a 祝你好运. It shows you are supportive and paying attention to their life. It’s a very warm way to say goodbye.

Don't use this if someone is going through a tragedy. If they lost their job, 'good luck' sounds a bit dismissive. In those cases, use phrases about staying strong instead. Also, avoid using it for very minor things. You don't need to wish someone luck for buying groceries. It might make them wonder if your grocery store is dangerous!

Luck is a massive deal in Chinese culture. Traditionally, people look for signs of 'fortune' everywhere. While this specific phrase is a bit more modern and Western-influenced, the sentiment is ancient. Red envelopes and jade charms are physical versions of this phrase. By saying it, you are participating in a long tradition of wishing for auspicious outcomes.

If you want to be extra fancy, try 祝你成功 (wish you success). For a very formal vibe, use 您 (nín) instead of 你. This makes it 祝您好运. If you are talking to a group, say 祝你们好运. You can also just say 加油 (jiāyóu) for 'Go for it!' 加油 is often more common among close friends than the literal 'good luck.'