Hartenstein has some really good tools. I think he can be the back up 5 right away if he has a strong camp.
I believe he is multi-racial Third generation pro baller tho (actually born in US.... raised in Germany)
Qi is a gonna be a bust. He looks like he hasn't improved at all in a year. Usually rookies who enter this league and become a decent role player make major strides every year in their first 3 years. I wouldn't be surprised if he returns to China after his contract is up because he can make more money there.