Question: What are the conditions for upgrading the Castle of the King of Troubled Times?
Answer: Upgrading the main city of King of Troubled Times requires meeting the pre-upgrade conditions. It can also be said that players will be eligible to upgrade the main city after completing the pre-upgrade tasks. Upgrading the main city also requires consuming corresponding resources.
Level 0-10 of the Royal City: Level 3 of the lumber mill, level 4 of the farmland, level 5 of the warehouse, level 7 of Taishiyuan, level 8 of the recruiting office, and level 9 of the warehouse are required.
King City Level 11-20: It requires level 10 medical center, level 11 chariot camp, level 13 archer camp, level 14 trap workshop, level 15 gem mine, level 16 iron ore, level 18 embassy, and level 20 lumberyard.
Level 21-30 of the Royal City: Infantry Battalion Level 22, Cavalry Battalion Level 23, Taishi Yuan Level 24, Embassy Level 25, Warehouse Level 26, Infantry Battalion Level 27, Chariot Battalion Level 28, and Archer Battalion Level 29.