they are just extra item .wils and .wixs
they are not really needed to run the cllent and can be turned off in mirconfig untill you wish to use them
dont know why the chinese coded them in as afaik the those .wils dont have a limit
there is nothing new in those .wils just make a copy of your item.wil and that and rname them with the L- in frount of the and stick them back in the data folder
BH