Titbit is that second batch avionics are being tested on a prototype (not sure its 04 or 06) and performance is twice as good as the first batch avionics. Much powerful mission computers are used for sensor fusion, overall performance is very satisfactory. What was once offered by Sagem should be left behind despite how good it was. PAF does seem happy with Chinese technological advancements. They are at a stage where they can compete with the best in world. Also, new flight control interface (fly by light as he called it) is being used in J-20 and FC-20 might share a piece of it.