This is the most serious problem, proving that India does not have a complete system for developing engines and relies on foreign engines. It is easy for others to judge the production trend and development cycle of your fighter jet. Decades ago, we repeatedly experienced engine research failing to meet the design requirements of fighter jets, ultimately leading to performance indicators gradually falling behind and ultimately abandoning the entire fighter jet project. As long as the Tejas project relies on foreign engines, there is enough intelligence to understand, which gives Pakistan more buffer time for purchasing the j10c and producing the jf17 block3. We don't need to worry too much about your local light fighter jets at the moment