Mining Bitcoin has been a risky investment over the last three years so the investor wants to have a very short period to get their investment paid back, says Wu via phone from Beijing.
"In the US, you need to spend three to six months building a mining facility but in China it's just one month."
Still, he thinks that situation might reverse over the next three years as the Bitcoin price rises and technology improvements slow down so that mining machines last longer.
Back in Kangding, Wang concedes that when the mountain peaks are once again covered in snow during winter he will have to move some of his machines out of his facility to another location because of the unreliability of the hydro power supply.
Guo Hua is less concerned about the weather and more concerned about the "explosive growth" in mining facilities around Kangding. He says the number has jumped from two to more than 10 in the past 14 months.
And this rapid development comes ahead of an uncertain period for the Bitcoin price
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