Holding the castle building upgrade blueprint in his hand, Mike was slightly excited.
After he calmed down, Mike shook his head and said slowly, "it's still a bit rash to directly upgrade the dragon nest now!"
"Although the military structure is important, the dragon nest is not the only important building in the Dragon Castle!"
The castle building upgrade blueprint was so rare. Mike wanted to use it to achieve the best effect!
He was the first to think of his biggest reliance, the Sky City.
He immediately asked in his mind.
"Can I use the castle building upgrade blueprint to upgrade the Sky City?"
"No, the Sky City is a war building, not a castle building!"
"The Sky City is a special war building..."
Mike asked, "What about the Dragon Castle?"
[The Dragon Castle is currently an intermediate level town, equivalent to a level 5 castle building. It can not be used to level up!]
Mike was speechless again.
