Judging by the guy on left and how his pouchs near his back shifts upward it seems to be no plates and sagging forward due to ammo. Either way infantry equipment neglect needs to be addressed in the PLA.They're just not wearing them tight enough. I've seen pics and videos of people wearing those exact carriers properly. Either there's no plates in them right now and that ammo and other weights in the front is causing that vest to sag forward or they're just wearing it too loose.