oh brother, let me see if I can do this:
J-7MF is a plane in the J-7 series, but it's really a completely different fighter.
The intake is now located in the belly.
There is a lot of changes in the wing, tail, vertical stabilizer and such.
Originally, J-7 only had 2 hardpoints under the wings and one under the fuelsage. Now, it has 7 hardpoints.
The avionics on MF has reached modern standard.
It talks a lot about the changes that allowed for better fuel efficiency - better operating radius and such. Also, talked about the aerodynamics in different speed ranges.
6 hardpoints are under the wings and 1 is under the fuelsage.
The payload will be 4.5 tonnes.
The avionics will be dependent on the customer. MF uses a domestic turbojet engine. It says the development period is short+low cost. The progress of MF is behind FC-1. J-7FS is a prototype of MF?