--
Is closing their exchange services going to effect this in anyway also?
Probably not. According to this:
"All of their other bitcoin services, including the mining pool and online wallet will continue to operate without delays or issues."
https://themerkle.com/haobtc-to-shut-down-bitcoin-exchange-operations-soon/But it's still better to wait and see for now.
Anyway, as for money the money from a trusted and tested wallet, for a 'possible 8% annual' interest? Especially to a Chinese exchange? Nope. At least
I wouldn't.
Besides, the only way you'd earn a bit from the interest is to actually let a sizable amount sit there. This wouldn't be a concern if you trusted the wallet 100%, but this doesn't seem to be the case?