Also lets not forget that in the 80s the u.s also offered f.5 tigers. Pak was the 2nd country to purchase f.16s after israeil. They helped retaliate the soviet forces in the 80s and the israiel from sabotaging the nuclear program(thats another long topic though)...
There is no doubt that f.16s were the best and reasonable choice available. Initially u.s was offering f.4s ..... As for the mirage program, the french gov didnt want to sell the ful package. The deal fell with the fal of government in mid 90s...
Il update as soon as i get more info. But what i know is that some officers (pilots, engineers) are going along with the chinese officers. There will be an exhibit related to projects and modern technology, the stalls are visited by people from all the world and they ask questions to the offrs.