Want to know the name of this flower Posted on Tuesday August 13th, 2013 by Lao Lin Update：Zz knowledgeably pointed out that this flower is called “Hydrangea macrophylla“. More details from Wikipedia
Hydrangea macrophylla的一个培育种，中文名绣球花，紫阳花等，原产中国和日本。
查了一下，是的，没错。博学！