I heard that Hittler though than the Japanese and the Chinese where almost as good as Arian. Did he think that they where equal or superior in any areas, or just universally slightly worse.

These previous posts are just a starting point for discussion, not to discourage it. Further questions, data, and debate are welcome.

Especially because they touch on Hitler's general ideas, but little in details of specific areas, the second part of your question.

"The Japanese ambassador to Germany in 1937 was married to a German woman. Was there any reaction by the Nazis to this?", a reply at https://www.reddit.com/r/AskHistorians/comments/5leo8u/the_japanese_ambassador_to_germany_in_1937_was/dbvvecm/ by /u/inferentialpolice

"How aware was Japan of Hitler's idea of an Aryan master race?" at https://www.reddit.com/r/AskHistorians/comments/3mi146/how_aware_was_japan_of_hitlers_idea_of_an_aryan/cvf82uv/ , replies by /u/Subs-man and /u/Orchideenpavillon . Despite the question's title, this thread is about Hitler's attitudes and also mentions (again, briefly) the Chinese.

Both are almost all about Hitler's ideas about Japanese, but both touch on China a bit. I include both because they have different source lists, and because the latter focuses more on changes after Mein Kampf.

(Edit: removing link to "Persecution of Buddhists during the Holocaust": it's on treatment of Chinese in Germany during World War II, but it's not about Hitler's ideas.)