Out of a hobby for airplanes, 59-year-old Chen Ruihua from Changshu, Jiangsu began designing his own nearly ten years ago, and has successively built four small manned aircraft. Among them, the second and third aircraft were successfully tested. After the video of the test flight was posted by friends on the short video platform, it aroused some attention, and many people praised him. However, Chen Ruihua's self-made helicopter also attracted the attention of the local police. Around March this year, the police found Chen Ruihua's home and persuaded him that the self-made aircraft itself is not illegal, but if you want to test the flight, you need to report to the relevant departments, and the test flight personnel must also have pilot qualifications. Under the persuasion of the police, Chen Ruihua promised not to fly privately. On March 28, Chen Ruihua told the Jimu News reporter that he was in the process of making the fourth plane and would obtain the n...