China's top tycoons dig deep for charity

The top 100 Chinese philanthropists tend to donate their money to single causes, many linked to education, according to a new report from Harvard Kennedy School.

The country's richest donated or pledged $3.8 billion between September 2014 and August 2015, donating for the most part to one cause.

Only one - Alibaba Group Holding Ltd's Jack Ma - gave to four different causes, while 71 percent of the top 100 donors gave to one cause.