Inside Hong Kong's biggest Bitcoin mine

Immersion cooling allows Allied Control to leave less space between the chips, which saves money that would otherwise be spent on rent.

The technology also cuts down on electricity use -- one of the other major costs associated with Bitcoin mining. Lau wouldn't reveal how much it cost to build the mine, but he said that electricity bills for a fully-operational mine of this size would typically exceed $50,000 per month.

"The real question from a business perspective is how efficiently you can run your mining operation," Lau said.