As I was scouring the Internet for the latest Lepin news this morning, I came across this website called www.legolepin.com. It looks to be an e-commerce website that originates in Vietnam. One of the cool things about this site is that they have a lot of the Lepin sets building instructions available for download completely free.
From what I've seen they have quite a few Star Wars, Modulars and Technic set instructions.
If you are looking for instructions for your Lepin set, you can find it here.