BCNEX took people by surprise, so many believed in that exchange, I had a friend that had close to 8 ETH stock in that exchange and he tried to contact their support, all to no avail. I also learnt a very important lesson with this, not to hodl more than enough in any exchange wallet
I think your friend is an idiot for storing assets on a new platform, outside of me there are more large platforms that ensure our security. and I also hope that you do not properly store assets on the platform because what is safer is our personal wallet