A site dedicated to Oriental porn, ThisAV claims to be the world's first Chinese adult entertainment website, but unless you can read Chinese, you won't understand shit of what's going on. This site clearly is catered to the Japanese porn lover. With movie thumbnails shown on the homepage you can click on one that takes your fancy and watch it without the need to join this site.
If you change the language of the site to English, you'll be able to read some of the titles at least, and notice most recent videos are near the top of the page. You'll also see various options across the top navigation bar including categories.
The categories page is quite hard to distinguish between them since everything is in fucking Chinese, but you can browse the site and try your luck with thumbnails to work out what each one is. If you're that mad on Oriental porn, then take a look, but otherwise I'd go elsewhere.