The power output method is different. The turboshaft engine is a turbojet engine that outputs shaft power. A turbofan engine ejects compressed combustion gases to provide power. Our country's current technical level in this area is at most the level of developed countries in the 1980s (Taihang engine), and the Qinling engine is at the bottom, only at the level of the 1960s and 1970s. No matter the engine level, we all have weaknesses. The key is that the materials are not good, the theory is good, and the design is good. After it was built, the power was not up to standard and nothing was done