Lin Yi just entered the door and immediately locked it behind him, then quickly pulled out his own map of mineral resource distribution.
The map was very detailed, but a magnifier was needed to clearly see the location of each mine.
[Ding ding ding, Host has successfully purchased a magnifying glass, 3000 Heavenly Bead Coins have been paid.]
This night was destined to be sleepless.
After an entire night of careful comparison, among the 21 mines owned by Lin Yi, there were 8 proven by later generations to produce large quantities of jade, including Luoyang Mountain.
And these eight mines, if developed diligently, could produce 10,000 tons of jade.
In other words, the output of these eight mines could allow Lin Yi to complete the system upgrade.
Once he collected enough jade, he could return to Dayou, thinking about it made Lin Yi feel excited; unknowingly, he fell asleep.
