Who built the first rocket ?

"The Discovery Channel's show "MythBusters" attempted in the 2004 episode Episode 24 — "Ming Dynasty Astronaut" to recreate Wan Hu's flight using materials that would have been available to him. The chair exploded on the launch pad, with the crash test dummy showing what would be severe burns. An attempt was also made using a chair with modern rockets attached, however, the uncontrollable craft proved that there were far too many complications for such a thing to have succeeded. It was determined that small rockets that can be strapped to a chair cannot provide sufficient thrust to effectively lift it, giving the legend the label of myth "busted". It should be noted that the view the crew members had of the first test as it was performed matched what the legend said; after the smoke from the explosion had cleared, both Buster (the crash-test dummy) and the chair had disappeared, though Buster and the remains of the chair were found next to the 'launch-pad'. "