Britain, Sweden, the United States, Canada, Australia, which country is better for immigration?

According to the basic immigration policy of Britain, it is better not to allow immigrants from Canada, Australia and the United States at present, provided that you are rich. If you are rich, you can invest in immigration or study abroad, then study hard, find a job, get a work visa, and then endure not returning to China for several years to get a green card. You must be very good at English to find a job abroad. If you are an investment immigrant, it is better to find an immigration agent, because immigration is still complicated, and just reading a bunch of English documents is enough headache.