Joke I Heard On Chinese TV

There's a school, right? And there's an Egyptian student and an Indian student in the same class. They start talking about their countries' ancient civilizations. The Egyptian goes to the Indian, hey, back in my country I was at the pyramids, and I found buried in the ground phone cables! This proves that Egypt invented the telephone first.

The Indian goes, well, I was chilling by the Indus river valley, and I dug a hole and found nothing.

The Egyptian retorts, ha!, you see, this proves the superiority of Egypt!

The Indian replies, no, it proves that India was the first to invent wireless!