On this day, 101 years ago, April 6, 1924 (March 3, 1924 in the lunar calendar), global flight was successful for the first time. On April 6, 1924, the Douglas-type biplane designed and manufactured by American aircraft designer Douglas successfully flew around the world for the first time. On September 28 of the same year, the same type of aircraft also flew around the world successfully. Douglas and the Douglas company he founded was therefore famous. In the later history of the manufacture and development of military and commercial aircraft, the success of global flight has an important enlightening effect.