[Building Blueprint: Commercial Port]
[Level: 4 stars]
[Construction materials required: 5000 units of wood, 10,000 units of stone
[Area: 100×200]
[Effect: Able to build a commercial port with complete facilities and infrastructure. (1) The attraction to merchant ships will be greatly increased. (2) The speed of loading and unloading goods will be increased by 50%.]
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[Building Blueprint: Shipyard]
[Level: 4 stars]
[Construction materials required: 8000 units of wood, 3000 units of stone]
[Area: 150×80]
[Effect: Can build and repair ships]
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[Cannon Manufacturing Plant]
[Level: 5 stars]
[Construction Materials: 5000 units of wood, 3000 units of crystal, 3000 units of mithril, 3000 units of fine gold, 3000 units of crude iron]
[Area: 80×100]
[Effect: Able to create all kinds of cannons]