Taking the A-line public ferry in the central lake area involves visiting four islands, but you can only actually explore two of them, unless you're traveling with children. We took the first ferry, departing at 8:30 AM, which gives you about 1.5 hours to explore each island. The ferry is waiting for you at the dock at that time. However, most of the time is spent waiting for the ferry. Since each island visit only takes a maximum of one hour, and there's no other way out of Qiandao Lake except waiting for the ferry, a lot of time is wasted. We planned to finish the trip in 5 hours, but due to the ferry schedule, it took us a whole day, leaving us physically and mentally exhausted. The scenery, however, is beautiful.