China has recently made an exciting breakthrough in aviation technology with the successful test flight of a prototype supersonic passenger aircraft, named Yunhsing. This new aircraft aims to fly nearly twice as fast as the famous Concorde, reaching speeds of up to Mach 4, or roughly 4,900 km/hour, and is being developed by Space Transportation, also known as Lingkong Tianxing Technology, a Beijing-based aerospace company. Notably, Yunhsing will also feature vertical take-off and landing (VTOL) capabilities, setting it apart from previous supersonic passenger aircraft.