Here's slightly larger image of the unit patches flown during Shaheen III ... to admit I'm interested in the two patches left and right second row, which are PLAAF-related IMO !
The right one looks like the Eagle-head used by some J-10 flown by the 44. FD / 131. AR ... and with a 131 clearly visble, it seems to be the 131. AR patch ! ... but the one on the left (looks like a fox' head or so ??) I'm not sure the number looks like a 4x. :what:
One hint could be the J-7G also used in this exercise, which are only operated by the 12. FD / 34. AR in Wendeng, the 24. FD / 70. AR at Zunhua and the 15. GAD / 44. AR at Hohhot-Bikeqi, which could fit.