While there were can I learn to speak Mandarin while there?

I suggest you learn Mandarin in the Jiamusi university, where they can provide you with the offical teaching. And you can also pay a proper tuition for Mandarin learning.
You can go to the university for consultation or search the official website of the university to get some information.
Here is the website of the university(English version):
http://jmsu.cn/