With all due respect to fellow miners simply buying and holding BTC was by far much more profitable then investing into ASICs. Industrial mining requires investments in support, cooling, guaranteed supply of electricity, maintenance and replacement of broken units, etc etc. Those investments could pay off at some point, but simply buying BTC's (or create a portfolio of coins to diversify risks) with that money will likely to give you much more revenue.
It's important for hashrate spread widely around the world, more mining farms in many different continents as the preventive in case of something bad occurs, such as before when China crackdown exchanges and fud news cause panic selling. Bitcoin miners are making nearly $7 million a day, it's a good investment for the long term as long as you have more than 1 ASIC and pay low cost of electricity.
For OP, if you want to purchase ASICs in China, why won't you make a mining farm in your country? How much it cost for the electricity in your country?
You have to overwatch the mining farm everyday, that's why it's better to build it at nearby places in your city. Most of the China’s hydro power plants are located in the southern provinces of Hubei, Hunan, Sichuan and Guizhou. So, I would recommend in Sichuan.
