There are 5 kinds of the boat on Kunming Lake in the Summer Palace. The cost is quite different. If you share the large with others, it is CNY10.00 net per person. For the pedalo, rowing boat and the electrical boat, you need to rent on your own and the charge varies from ￥20 to ￥80 per hour. You should ask on the spot for the detials. Furthermore, you need to pay the deposit.