Why did the Leaf Village invite the Village Hidden by Sound for the Chunin exams?


I am currently watching _Naruto Shippuden_ and just watched the episode where
in the past,

> Orochimaru said to Kabuto that he is going to create the Village Hidden by
> Sound.

My question is, if the people from Konoha (Hidden Leaf Village) know that

> the Sound Village is Orochimaru's village,

then why did they invite ninjas from the Sound to compete in the Chunin exams?
Was it not common knowledge that

> Sound Village was Orochimaru's village?

If this will be answered further in the _Shippuden_ then I will watch it, but
I don't see why it would be.




At the time of the [chunin
exams](https://naruto.fandom.com/wiki/Ch%C5%ABnin_Exams), Konoha was unaware
the Sound Village was built by Orochimaru. While Kabuto was infiltrating the
exams as a Konoha genin, he mentioned the village was quite young and little
was known about it.

> [![Kabuto talking to Team
> 7](https://i.stack.imgur.com/Tunwd.jpg)](https://i.stack.imgur.com/Tunwd.jpg)  
> Naruto Chapter 39

As for why the sound genin were in Konoha, the chunin exams became open to all
villages as a result of the Third Shinobi War. Given how the Sound Village was
unknown to be Orochimaru‘s cover and appeared to be an average - albeit young
- village, nobody though twice about genins taking the exam.

