Tertiary upgrades within a tier-six territory were not difficult to achieve for various tier-four structures, especially with a substantial supply of materials, thus the upgrade pace surpassed Du You's expectations.
In just under a month, nearly every upgradable building had been upgraded. Once construction of the spaceport was complete, the overall development speed of the territory greatly exceeded its previous rate.
Land Armored Factory (Tier 5):
- Land Combat Tanks level 31-40: 300 units/month, full price 300 Yellow Crystal Coins each
- Bipedal Mecha level 31-40: 500 units/month, full price 200 Yellow Crystal Coins each
- Laser Tanks level 41-50: 100 units/month, full price 500 Blue Crystal Coins each
- Multifunctional Land Cannons level 41-50: 60 units/month, full price 800 Blue Crystal Coins each
