一係升conquest
一係shop
Finally training center. Besides from old buffs they have added 2 new buffs for guild raid which are hp and cdmg. Same buffs atk, def, hp, cdmg are aded for conquest too obviously. So in short with each level you get 1% hp for raid, 1% hp, atk, def for conquest, 2% cdmg for raid and conquest. Do I really have to explain again how long does it take you to max a building and how minimal these buffs are compared to those. Not to mention you'll also have to spend precious AP to upgrade these buffs. This is definitely the worst building if your guild is not full of strong player and your aim is top ranking at conquest. But even then this is not very good.
https://www.reddit.com/r/Kings_Raid/comments/8thfyt/guild_buildings_are_pretty_unbalanced_as_they_are/