The PLAAF also does a lot of DACT, though the resources for such wasn't available before the 90s. Before that, the only the PLAAF could train upon was J-6s dogfighting with each other, and along with the occasional J-7 and J-5. J-8s were problematic. I'm not sure if a J-6 vs. a J-7 can be regarded as a real DACT practice, as both are fighters of the same philosophy.
The big change started to happen when the PLAAF procured the Su-27s. Initially they had problems training the pilots. The Russians commented that even though the pilots were taken from J-8II ranks, they had bad habits like not trusting or relying on the radar at all. The radar reliability was so bad that time, that basically the PLAAF was a genuine day fighter WVR only force.
The problems got hammered out eventually, and the Su-27s was much different from the J-6/J-7 crowd. There were reports and rumors that the Su-27s were getting their ass handed down by the older planes. Perhaps because the PLAAF was scared of crashing the planes so they pampered the planes and set many flight limits, affecting the training of the pilots. Or the planes had so many maintenance issues, the pilots can't get their hours up. Or pilots that developed habits flying from J-8IIs are not going to stand up against pilots who developed their skills on much more maneuverable aircraft like the J-6 and J-7.
Nonetheless, the Su-27s were able to demonstrate their superiority. Ability to nail their targets at BVR range, ability to use the HMS to lock their targets. With better situational awareness and ECM pods that blind ground radars, the Su-27s got past hordes of air picket fence tactics, in order to bomb run the J-6 and J-7 bases with impunity.
That was a major culture shock to the PLAAF, which led to a Flanker mania in the mid ninetiesthat led them to licensing the plane and purchasing more batches.
The growing numbers of the J-7E and the "fixed radar" versions of the J-8IIs starting with the -D model, greatly added to the PLAAF's airborne radar capability. With both planes, the number of DACT options have increased. The PLAAF is on its way to transformation.
The other effect of such DACT is that the PLAAF also learned how to use obsolete aircraft against more modern competition. J-7s for example, learn to fly low and avoid flying radar nets, usually supplied by Su-27s and J-8IIs. One of the reasons they are keeping J-7s for now, is because with the right tactics and command network, the J-7s, particularly the J-7E, can still be a threat to more modern design fighters. With the J-8II, a working radar and BVR missiles, with the appropriate tactics, showed they can also be a threat. I certainly like to see a J-7E vs. J-8IID match.
DACT options continue to increase with the J-7G, J-8H/F, Su-30MKK, even JH-7As. Now even J-10s. Forseeably I see the FC-1 as a great DACT and Aggressor option for the PLAAF.
Other factors contribute to the growing pilot hours in the PLAAF (up to 180 plus hours by 2004). A healthier budget, a much more improved logistical support especially for the Flankers. Even if more modern planes are down, there are still pools of J-7s where you can get your flight hours up.