New Delhi, June 17 -- Online sellers in China are offering bottled water taken from lakes of elite universities. They claim it brings "wisdom".

The water, sold for 30 to 99 yuan (US$4-14) per 500 ml, is far costlier than regular bottled water. The regular bottle of water costs around 5 yuan ($0.7).

During China's national college exam (June 7-10), online sellers listed bottled water labelled "Weiming Lake Water" and "Campus River Water" for 99 yuan ($14) per 500 ml. They claim it can improve brainpower.

Water from Weiming Lake at Peking University is being sold. Some reports claim that water from Tsinghua University's Qinghuayuan Lake is also being sold for the same reason. Both are elite and historic institutions, often compared to Ha...