WORTH TO COLLECT!
very nice book. It looks like it has lots of nice pictures. Is it published only in Chinese or is it also published in English?
Chinese only:-( welcome to study Chinese! hehe. there are over 58 family 463 genus of gesneriaceae in china,and over 27 family 375 genus of gesneriaceae are Chinese special genus.
There are 421 colorized pictures(mostly wild natural plants) in the book, so I think it would be worth to collect!
about Chinese gesneriaceae in English,you can search http://www.efloras.org/