surely not. 30-40k after tax, roughly nothing
you can easily earn the same or higher in China.
I believe to leave or to stay in the UK, depends on the feeling of each individual, you want to sense a different life, you come to a foreign land.
You need to go back to your parents, you go back to China.
Me, I didn't like UK at all but I stayed as my hu*****and liked here. I now like UK more than China because of my son. Sounds so boring, but that is true.