Photo taken on Jan. 15, 2009 shows a poster of "net supermarket" in a large supermarket in Tokyo, capital of Japan. [Ren Zhenglai/Xinhua]
![Photo taken on Jan. 15, 2009 shows a poster of 'net supermarket' in a large supermarket in Tokyo, capital of Japan. [Ren Zhenglai/Xinhua]](http://images.china.cn/attachement/jpg/site1007/20090116/000bcdb95f1d0ada35933c.jpg "Photo taken on Jan. 15, 2009 shows a poster of 'net supermarket' in a large supermarket in Tokyo, capital of Japan. [Ren Zhenglai/Xinhua]")