How do you say hello in Punjabi when meet a Sikh?

There's a bit of nuance to this. While "hello" is a perfectly acceptable greeting in Punjabi, there are some culturally specific ways to greet a Sikh:

* Sat Sri Akal: This is a common Sikh greeting, meaning "Truth is Eternal" or "God is Great." It's a more spiritual greeting than simply "hello."

* Waheguru Ji Ka Khalsa, Waheguru Ji Ki Fateh: This is a more formal greeting, literally meaning "The Khalsa of Waheguru, the Victory of Waheguru." It's a statement of faith and unity.

Remember:

* It's always polite to use respectful greetings.

* These greetings are generally used among Sikhs. You can still use a simple "Hello" or "Namaskar" (a respectful Hindi greeting) with a Sikh, but using the more culturally specific greetings is a sign of respect and understanding.

Enjoy your interactions!