Polylang for multi languages

I want to create two languages site: zh and cn , for example. I want to one post being translated into two languages: zh and cn. How can I achieve this? I know below setting: <table class="responsive table cr_main_table_nowr"> <tbody> <tr> <td> <div> <b>Assign WPML/Polylang Language to Posts:</b></div></td> </tr> </tbody> </table> But I am not sure if I can add two languages code:zh,cn at the same time to make it generated two versions of the same post? I also know there is automatic translation service in WPML but I find it too expensive to use it because I had thousands of posts. Is it possible to add language translation in Content Editor if there is no easy solution for my problem ? thanks, Eric