Instruct: Classify Amazon reviews into positive or negative sentiment
Query: informative

I love Russian Harbin/China history so I was really excited to buy this book. The first thing that struck me was that the text didn't flow very well (I read the book a while ago so it's kind of hard to explain). That's why I didn't give it a 5. However, if you're like me and you really love the content, this won't matter. I also wish that the book had been longer and that she had gone into more detail about certain things, like the politics of the time. Besides that, I recommend this book.