Nice job. Might want a caveat about Ulaanbaatar. There are some quizzes on JetPunk that reference it as "Ulan Bator", the old anglicised name. I know you said it was based on the Asia Capital quiz, but it is not 100% consistent site-wide. Just my 2 cents.
See Joshpen comment and my original instruction re the source: took my list from The QM's quiz. And note "Ulaanbaatar, formerly anglicised as Ulan Bator" at https://en.wikipedia.org/wiki/Ulaanbaatar. Thank you anyway.