For this stock, do I need to purchase it in Hong Kong dollars? Can't I buy it with a US dollar account?

Victor靓汤 : This is the Hong Kong stock market, calculated in Hong Kong dollars. Xiaomi is also listed on the US stock market and calculated in US dollars, with ADR conversion rates should be the same for both price fluctuations (If incorrect, please don't criticize me).）

103698313 : You need to exchange your USD to HKD before buying it.

Moomoo Buddy : Dear customer, hello, if you want to trade Hong Kong stocks or China Connect on moomoo, you need to exchange the corresponding currency for trading. Please go to 'App - Account - Transfer - Currency Exchange' to apply for Currency Exchange.