Goodness. I'm a lazy player. I just do every mine regardless. I don't calculate a darned thing. Perhaps my OCD kicks in high gear & I simply CANNOT leave any tile unturned during sny Event.
Always fun to read the strategies thoπ
REWARDS:
China Diggy doesn't really need the materials, he picks Food, Experience, Speed Potuin, Rubies, & Gems.
Scandi: Food, alternate between Exp., Bronze, Iron. Speed Potion, Amethysts & Gems.
Egypt: Stone, Bronze or Iron, Speed Potion, Gems & Amethyst.