BEIJING (Reuters) - Chinese legend holds that a Ming dynasty (1368-1644) man named Wan Hu aimed for the stars by holding kites in each hand and strapping himself to a chair as 47 servants lit 47 gunpowder-packed bamboo tubes tied to his seat. A roar followed. After the smoke dissipated, the chair was gone, along with Wan Hu. It was unclear if what was purported to be the world's first manned rocket ever made it to the skies. Today, China is counting down the days to its first manned space launch and hoping to avoid the same fate as Wan...