in the v60.sql you will see the lines above
you will need one line on your file:
INSERT INTO `LocalizationLanguages` VALUES (5, 'Chinese', 'ch');<<<you have to find the flag i do not know it

then theres 2500 lines, starting with this:
INSERT INTO `LocalizationStrings` VALUES (1, 4, '2002-{0}. Produit de groupe de www.boonex.com/BoonEx.');"

change all the 4's to 5's and translate and save
you will need to run an sql query with it from phpmyadmin

open install/sql/v60.sql see more find the lines that look like this and take them to a new file
when complete name it chinese.sql