PS: This pack only doesn't contain little girl model.
The little girl was sculpted in Zbrush and textured in Substance Painter.
The Emily model and textures are from http://gl.ict.usc.edu/Research/DigitalEmily2/
I downloaded the 《Photo realistic character rending》package from Unreal Community. In my path of learning, I found the shader in this package was quite hard to understand. Especially eye shader and eye blending(Tear-Line?). I think if someone who doesn't have knowledge of mathematics or algorithm, it's really hard to manage and use these assets, even the result looks so great!
For people like me who has no programming or TA experience, such a shading is not really useful. What we need are easy manage and good looking images. Maybe the way that I create materials cannot reach the best quality of images but there is a balance between efficiency/performance and quality.