Skeleton Assembly Workshop (Tier 6):
Skeleton Ballistae Level 45: 600 units/month, full price 200 Blue Crystal Coins/unit
Skeleton Worm Level 40: 1000 pieces/month, full price 50 Blue Crystal Coins/piece
Skeleton Crushing Machine Level 48: 500 units/month, full price 250 Blue Crystal Coins/unit
The Skeleton Assembly Workshop, due to the lack of corresponding blueprints and branches of the armed forces, couldn't upgrade its level or add new varieties. The huge cost of upgrading to tier six only served to increase production.
Meanwhile, the White Bone Elephant Mausoleum, due to the lack of suitable materials, didn't even have its building level upgraded, remaining at tier five.
To upgrade these branch of the armed forces buildings, Du You had to consume many tier-six Undead. For these things, Du You made his Undead secretly capture numerous tier-six Undead and Demons on the battlefield by utilizing the world's rules.
