But if not again faked, two digit numbers with in the 2x2x pattern are from the Shijiazhuang FA - and here the 2nd Training Brigade at Yongji. This unit was so far flying J-7B/JJ-7A.
May I ask why this is connected / related to Siping? Siping would be the 31st Air Brigade, a JH-7A unit with 64x2x serial numbers.
I am not sure. Maybe the images are only for illustration purposes?
Image of a J-10B taken form a recent interview from Phoenix News.