According to the official website of Qinhuai River in Nanjing, children under 1.3 meters (4 feet) tall can ride a boat on Qinhuai River for free, while those between 1.3-1.5 meters (4-4.9 feet) tall need to pay half the adult ticket price.
As for whether kids can buy their own boat tickets, it’s unlikely as children are generally unable to purchase tickets independently in China due to age restrictions and related regulations. In most cases, an accompanying adult needs to buy a ticket on behalf of the child or provide proof of guardianship.
Please note that specific rules may vary depending on the location, time, and type of boat ride you’re planning. It’s always best to check with Qinhuai River officials directly for up-to-date and accurate information before your visit.