Qianli chuan

Qianli chuan (Chinese: 千里船; pinyin: qiānlǐchuán; lit.

The boats were driven by human pedaling and were able to cruise hundreds of kilometers per day with no wind blowing.

[1] Qianli chuan were invented in the late 5th century AD during the Southern Qi dynasty, and the invention is attributed to the ancient Chinese astronomer and mathematician Zu Chongzhi.

The boat was proven to be able to cruise several hundred kilometers in a single day without any wind blowing.

[1] Late-8th-century AD records have descriptions of the qanli chuan as a type of naval boat that had two wheels found on its sides that was propelled by treadmills.