It seems that China is already armed with low-drag medium-range air-to-air missiles like the AIM260, which may have been secretly in service within the PLA for several years, after all, the PL15 is already a decade old. (1/2)
This ammunition does not have the middle wing of the body like the PL15 or the AIM120D, and the diameter is smaller than that of the PL15, and the J-20 may be able to carry 6 or more of these missiles in the internal bomb bay(2/2)