How to type in Chinese pinyin tones on Dvorak keyboard on macOS? I want to type in Chinese pinyin and found a website, but it only works for second (é) and fourth (è) tones. The first and third tones don't work on Dvorak, as Option + a and Option + k input å and ˚, respectively.

In Dvorak, how can I type in these remaining Chinese tones?
You can only type 3 tones on Dvorak (or on US for that matter).  To include the 3rd tone you have to use ABC Extended, which is qwerty.  You can make a custom Dvorak layout which adds the missing tone with Ukelele.