之前默哀石像其实已经有这方面迹象了，所有海洋资源加2锤。最近的大更新给很多UB加了这个效果：
- buildings now can increase the yield of tiles with specific resources if they have an appropriate improvement
- Persian Apothecary now gives +2 food on improved incense tiles, +1 food on improved silk and spices tiles
- Iranian Caravanserai now gives +2 food on improved incense tiles, +1 food on improved silk and spices tiles
- Mongol Ger now gives +2 food on improved horse tiles, +1 food on improved cow and sheep tiles
- Congolese Mbwadi now gives +2 commerce on improved cotton tiles
- Argentine Cold Storage Plant now gives +2 commerce on improved cow, pig and deer tiles
- Colombian Hacienda now gives +1 food on improved banana tiles, +3 commerce on improved coffee tiles
- Brazilian Fazenda now gives +1 commerce on improved banana, spices, sugar, coffee and tobacco tiles
前提都是资源地块上已经开发了相应设施
波斯UB 熏香+2食物，丝绸和香料+1食物
伊朗UB 同上
蒙古UB 马+2食物，羊和牛+1食物
刚果UB 棉花+2商业
阿根廷UB 牛、猪、鹿+2商业
哥伦比亚UB 香蕉+1食物，咖啡+3商业
巴西UB 香蕉、香料、糖、咖啡、烟草+1商业