thinking some idea about make a building which offer automatic buff such as:
1) speed up bookbinder production progress
2) double fold EXP reward from adventure/ expedition
3) expand 2 building license (license removed if building removed)
4) can convert all minerals into gold (Alchemy building)
5) ballista & any siege production ( I found it was nice and essential in battle)
6) government building that unlock ascension to residence from LVL 6 into LVL 7
Also, please add some new decoration in shop too.