How to interpret Australian e-visa

this is easier to answer. It means replacing the original paper label. For example, before you applied for a one-month visa, the Australian Embassy would put a note on your passport, indicating the validity period of your visa. But now, without this note, you will only receive an email saying what date your visa is, and you should remember it yourself and print it, but there is no hint on your passport. However, when you pass the customs, the validity period of the e-visa will be displayed, so you don't have to worry. Of course, you'd better bring the email sent to you by the embassy before, just in case, Chinese in Australia basically do this. ：）