I struggle to spend 3000 a month.

International schools pay very good salaries in China and offer free accommodation as a rule. The cost of living is low, relatively speaking, so you can save a lot of money. You've got a great job. Well done!

I saw a documentary a few years ago about a young Brit business analyst married to a former home economics high school teacher, with their 2 toddlers, forsaking London and his 9,000 GBP a year job to live abroad in Mauritius. He gave up the idea to open a wind-surfing business there to take an IT job working just a 40-hour week for 7,000 GBP a year as owning a wind-surfing business wouldn't have made him much money . She couldn't get a job at an international school as she had no TEFL qualifications. She could have done a local TEFL, but would have made only 500 GBP a month instead of 1,500 GBP a month thereafter.

There they would have quality time together as a family in a tropical paradise living in a rented villa with a swimming pool, and saving 2,000 GBP a month with his wife remaining a housewife. Most importantly, he was able to shed his stressful job in London for a less stressful one that allowed the family to save money, which they couldn't do despite living in a tiny rented flat in London.