It's getting dark in Australia. Will the Immigration Bureau arrest people?

Yes Australia cracked down on illegal immigrants in China. Once found, they are immediately detained and repatriated, and it is difficult to get a chance of "bail". So I found out that immigration would definitely arrest people. The Commonwealth of Australia, referred to as "Australia" for short, has a territory area of 7.692 million square kilometers, located between the South Pacific Ocean and the Indian Ocean, and is surrounded by the sea. It is the only country in the world whose territory covers the whole continent, so it is also called "Australia".