Two to five milligrams.
His current cultivation—just maintaining the partial ring halo around his heart at 15% completion—consumed approximately 50 milligrams of exotic energy per day. That was just maintenance. Not growth or progress. Just keeping what he already had stable.
To actually make progress on his cultivation, he'd need grams per day. Eventually tens of grams. As he advanced to higher stages, the requirements would increase exponentially. Tons per day wouldn't be unusual for high-level cultivation.
He did the math quickly:
For basic daily maintenance: 10-25 square meters of growth area (a small room)
For moderate cultivation progress: 100-250 square meters (a large greenhouse)
For rapid advancement: 1,000-2,000 square meters (multiple industrial greenhouses)
For commercial production or supplying multiple cultivators: tens of thousands of square meters (multiple football fields)
