At the top of many Wikipedia articles, there are infoboxes (advanced templates summarizing key facts). In this module, you will learn how to use them.
1) Read Wikipedia:Manual of Style/Infoboxes
2) Can you add infoboxes to articles missing them? Take a look at Category:China articles without infoboxes, Category:Japan articles needing infoboxes and Category:Central Asia articles needing infoboxes or Category:Wikipedia articles with an infobox request (at the moment, no category groups Korean articles - Category:Korea articles without infoboxes) and see if you can add an infobox to it. The easiest way to do this is to find a similar article that has an infobox, copy it and modify the relevant parameters. If you want to add more conten to the copied infobox, see its documentation page (ex: Template:Infobox person)