Property companies buy and sell houses with owners without authorization. What will the court say? Will the responsible person go to jail?

According to Article 270 of the Criminal Law of China

Article 270 Whoever illegally occupies another person's property in a relatively large amount and refuses to return it shall be sentenced to fixed-term imprisonment of not more than two years, criminal detention or a fine; If the amount is huge or there are other serious circumstances, he shall be sentenced to fixed-term imprisonment of not less than two years but not more than five years and shall also be fined.

If you take the initiative to refund, you will be fined; For those who are unruly, say two years or more, five years. The amount of real estate is definitely huge.