I only had WeChat installed, but I never used it.
As far as others, I have installed some of the Chinese Social apps, maybe a year ago, and removed them because it was virtually impossible to use, language wise, and they would constantly lock you out from logging in. So what's the point, and I deleted them. I have had Oplayer and deleted that, because I never used it.
Maybe two months ago, I went cleaning "house" on my phone and removed everything I didn't use or ever use... I routinely clear out background apps, to preserver battery, and stability. Still not sure... This is depressing.