It's hard to tell because you haven't given a good pic. of leaves, but if it's vine like, and berries turn blue & pink as well as white, it may be an Ampelopsis.. (forget the other name, but check on Google for images).
Thank you,Rima. I am so sorry that this is only picture I have.This plant is a small arbor,but not a vine,which is all I have known.
The plant looks suspiciously like a Dichroa species (Hydrangeaceae). I would guess D. daimingshanensis from the flowers and what little of the leaves I can make out. However, for a proper identification, it is essential to see a close up of the flowers and leaves, and to know from where in China this plant originates.
David Tarrant and Douglas Justice,thank you very much for your help. This picture is taken at Hanzhong which is in the south of Shaanxi Province,China.What a pity that I have only one picture.
I'm expecting the old POTD to come back and with it, the photo Daniel linked to. In the meantime, here is one from UBCBG from July 2013. A rare plant from Hydrangea family is in bloom
