Lunar base, control room.
[
"Would you like to spend 100 tech points to raise Mathematics from 1.99 to 2.00?"
"Yes!"
Zhao Yu had only 15,000 tech points left, he had to be careful not to squander them, incrementing the seven basic sciences one bit at a time.
Once he had increased all seven basic sciences to 2.00, the Type I Particle Black Hole Propulsion Device finally appeared on the exchange list.
The cost was within his estimation, only requiring 10,000 tech points.
"Do you want to spend 10,000 tech points to get the Type I Particle Black Hole Propulsion Device?"
"Yes, sir!"
[Base: Level 2]
[Experience: 110800/300000]
[Technology Points: 4230]
[Type I particle black hole thruster under construction. Time remaining: 7 days.]
"7 days should be enough time!"