The MS Word instructions included in the rar file S5000_A422_004_082_140402_CN_3G_user_1404020200" in flashing the chinese ROM is not clear especially in updating the USB driver so I installed first the SnapPea for the USB driver to get installed and update the driver later on. It is really tricky.
Anyhow, I managed to successfully flash the chinese ROM using SP Flash Tool. After flashing, GApps were not there so it is required to be rooted for it to flash the GApps Lite. I attempted to root the S5000 using Framaroot, it says it is rooted but when I run SUPERSU, the SuperSU binary installation failed so I re-flash the chinese ROM and tried to Root using Sroot (in Chinese language as well) so I just guessed it up the buttons I clicked. After assuming that it is rooted, I check the Tab and one chinese app was included, what only written in english is the word "ROOT" so I assumed this is the "SuperSU" of the root. I installed Root Checker and it is verified it is rooted.
what is the name of the "SUperUSer" app used in the SRoot done in this mod? Please see screenshots. I googled SRoot but I cannot find any relevant information about it and it rooted my tab.