The Chinese media published material stating that the J-20, being the most advanced aircraft in China, still cannot be called a fifth-generation fighter. The Sohu publication names the reasons for this.
According to the author, in the military section of the mentioned resource, many Chinese experts are inclined to attribute the J-20 fighter to the fifth generation, but, in fact, there is a main factor that does not give the J-20 such a status.
From the material:
This factor is the lack of engines at the moment that can give the J-20 fighter super-maneuverability. Fighter jets are operated with Russian engines, there are few variants of the latest engines created in China for the new batch of J-20. But while these engines with a controlled thrust vector are being tested and until they go into series, the J-20 fighter cannot be fully attributed to the 5th generation.
In 2018, a modernized J-10B aircraft with a thrust vector controlled engine was demonstrated at the air show in Zhuhai (China). One of the modifications of this engine is being tested on the J-20. At present, the preliminary results of such tests are not officially reported.
The fifth generation fighter is an aircraft that must have at least two parameters: the implementation of low visibility technology and the latest engine with controlled thrust vector.