The biggest disadvantage is that when the flight w...

The biggest disadvantage is that when the flight was delayed, the language I spoke to the passengers was English, Mandarin, but no Cantonese. The flight was to Hong Kong. There are still some people in Hong Kong who don t know Mandarin. There is a lady. Ask me, what about the radio?
However, there is a Japanese version of the broadcast of the flight to Osaka!