Where do you live now? How is your electricity cost now? And how much do you want to spend on buying/rent a house in China? The electricity cost there are about 0.5 CNY per kWh according to a Chinese mining site. Is it worth it for moving to China for just the electricity cost?
i pay around 0,12 USD now per kWh.
well i'm willing to to spend as much as i can, now i couldn't move anywhere within 9 months tho. (going to London to work 6 months in September)
If your electricity cost is 12¢ (USD), then moving to China only saves about 4¢ per kWh, or 1/3 of the electricity costs. Also the salary and the quality of life in China is very low, look at the GDP per capita figures between China and the EU. So I only recommend to find some trusted host to host your mining equipments in China, and you may travel there sometimes to see how your mining goes.
Actually, we would be 5 guys going.
If you are 5 guys going, and assume an average house there cost 500000 CNY (but this price maybe outdated), then one should pay 100000 CNY, or 14500 euros to buy the house.