1) Flash SuperSU v2.78 SR1 (EDIT: make sure to install it in systemless mode! To do this before flashing the file use TWRP terminal and type:
echo SYSTEMLESS=true>>/data/.supersu;
2) Flash Suhide v0.54;
3) Wipe dalvik cache and reboot;
4) Flash this Xposed modified version;
5) With a file manager (I used Root Explorer) do as follows:
Copy the file /su/xposed/system/framework/XposedBridge.jar to /system/framework;
Copy the file /su/xposed/system/lib/libxposed_art.so to /system/lib
(Important: if your device is arm64 you need also to copy the file /su/xposed/system/lib64/libxposed_art.so to /system/lib64);
Copy the file /su/xposed/system/xposed.prop to /system;
6) Reboot, install Xposed Installer and enjoy Xposed
最後用ROOTSWITCH把ROOT隱藏起來就可以用了..