As legend has it, human flight in Asia dates back more than one millennium. In 559 AD, as the story goes, several prisoners in what is now China were forced to jump off a tower attached to a kite; only one survived (to be executed later). Late in the 14th century, Chinese official Wan Hu supposedly flew for a short time in a chair powered by 47 rockets, his flight ending in a fatal explosion. Between 1630 to 1633, Ottoman inventor Hezârfen Ahmed Çelebi and his brother, Lagâri Hasan Çelebi, are reputed to have flown via (respectively) glider and crewed rocket.