How much can New Zealand earn as a builder?

Working as a construction worker in New Zealand, the average monthly salary starts at NZ $4,000, which is considered a high salary in New Zealand, but it is just a pre-tax salary. You also need to pay personal income tax, medical and industrial injury insurance, personal income tax and two kinds of insurance, which are deducted from your salary every month, so you can get NZD 3300. 1 NZD is 4.5 yuan RMB. Of course, food and accommodation in New Zealand cost extra money every month. Employers in New Zealand don't provide accommodation for their employees free of charge, but they also charge extra. As for the living expenses, I'm not sure.