Just a quick and probably stupid question, but...
Basically, I wanted to play music again after years and years of not doing it, so I pulled out that old charango I have. The first string was basically broken so I bought a new string (a guy at a music store sold me the one I needed) but now, few days later... I never had to do this so I'm afraid I don't even know how to do it.
See below some pics to show you what I have :

About the second pic, there is obviously a hole on both sides to put the string in. I watched a few videos but I'm still insecure since it was never the same system, and I'm afraid to break something. Thanks in advance for your kind help.
It is indeed a guitar string ; the guy at the shop told me that they had no charango string but that guitar string could work, he seemed pretty confident about it. I went to the shop with my charango so he could easily see what I needed.
However, the little metal circle part definitely can't go through the hole, it is way too big.
Sadly I cannot go back to the shop for a while. I remember he told me something about putting the string into the circle thing, but unfortunately that was a quick explanation and I can't remember a lot of it.
– Elonas Sep 24 '20 at 17:25