Beijing, January 23 (Youth.cn) - On January 20, 2025, Sichuan Lingkong Tianxing Technology reveals its supersonic jet, “Cuantian Shihou,” in Chengdu City, Sichuan Province. The test aircraft features a length of seven meters, a weight of 1.5 tons, with two ramjet engines, and is capable of cruising in a speed of four mach (about 4,900 kilometers per hour) in a 20 kilometers height. The engine, “Jindouyun 400,” which has successfully passed the test drive, is also exhibited. Photo/VCG