This article also says some what same.
https://www.google.com/url?sa=t&source=web&rct=j&url=https://thechinaproject.com/2022/11/17/chinas-real-but-gradual-progress-in-developing-its-own-jet-engines/amp/&ved=2ahUKEwifnqOh0NT7AhUoS2wGHctRAhAQFnoECBMQAQ&usg=AOvVaw3okreMko7ijToa3q8oexwk