Glad to be of help! Yes, Ruan Ling Yu is indeed quite a sweetheart. I haven't seen this film yet but will be watching it at the Zhu Shilin program at the Hong Kong Film Archive at the end of the month.
http://www.lcsd.gov.hk/CE/CulturalServi ... ilm19.html
(It's titled here as Civil Wind)
BTW, there is a great resource about Shanghai films and stars that you might like. It's in Chinese, but I've been able to navigate around it successfully despite not being able to read it. Just remember you need to use Chinese Simplified for search terms.
Shanghai Memory
http://memoire.digilib.sh.cn
I was able to find there that this fellow...
http://hkmdb.com/db/movies/image_detail ... ay_set=eng
... appears to be Zheng Junli
http://memoire.digilib.sh.cn/SHNH/photo ... owId=11896