Regarding the use of troop building upgrade cards, Fang Jie had an idea long ago.
After all, these cards could only upgrade troop buildings; other buildings were out of the question. And among Fang Jie's buildings, the most useful troop building to him was his own Skeleton Conversion Field.
The second most useful one, surprisingly, was not the Undead Troop building because Fang Jie barely used other Undead Troop buildings.
In fact, the most useful turned out to be the Alchemy Workshop, this universal alchemy building.
He was not from the Alchemy Camp, so he could hardly obtain alchemy building upgrades or new alchemy buildings through conventional means. However, this card was different.
The troop building upgrade card was universal, so these two were his options.
Fang Jie directly took out the card and used it on the two special buildings.
