"What is this?
It is only partial jailbreak. It installs Cydia on special web platform, You only can install some apps an themes from this Cydia, (very limited amount). Normal "untethered" jailbreak runs Cydia on "Cydia Substrate". It is specially designed platform. But Semi jailbreak cannot access to system root of iOS to install "Cydia Substrate".
Therefore it creates special online web Platform to run the Cydia"
Hmmm…well I've been fooled then.I doubt very much that it is legit.
http://en.pangu.io (official pangu)
http://pangu8.com/83.html (alleged semi-JB)
Also no mention on the official site, nor on the official twitter of Pangu:
Nothing on reddit accept a warning that it is fake:
Nothing from the leading Dev's, not even from i0n1c, which would probably be the first to comment (or condemn) especially if it concerns Pangu.
Also it involves installing a profile, which is a security risk if unsure from whom it is or what is does.
All-in-all: Stay Away!