HELP! How to DIY the loading images?

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I had downloaded a Chinese Version LOL and copied the JPG files of champion images to the folder
C:\Riot Games\League of Legends\RADS\projects\lol_air_client\releases\0.0. 0.226\deploy\assets\images\champions\

It worked well on PVP.NET, all the images of champions changed, but the images in loading screen and the images in game are still unchanged.

Could anyone tell my how to totally change it?