How did Mercury solve the mystery of the Assassin's Creed Revolution?

1, Mercury can be said to be the tutorial part of the eighteen puzzles, because it is almost no difficulty and it is all completed in one building.

When I went to the basement, I saw this puzzle. Without mentioning anything special, I said "old woman" and went to the place where there were two paintings on the second floor and opened my eyes. The word on the right is the second question. 3. The second question is said a lot, but what is useful is the "weather vane". Needless to say, the dome at the top of the coffee shop is a cock vane, upward. The mystery of Mercury is solved, so the first fragment is in hand.