Invest and immigrate to Australia, both of whom are in China. Do you get married first or alone in China?

Getting married before emigration is cheaper and faster, because you can apply for two people at a time. If you immigrate before you get married, you have to submit two immigration applications, and in order to check the marriage immigrants, you need to submit a lot of evidence to prove that you are really married, which inevitably adds a lot of trouble and is completely unnecessary. Immigration is a laborious task, so don't artificially increase the burden.