Introduction to artillery: Edinburgh Castle was a former military fortress. You can still see neatly placed black ancient cannons on the walls of the castle. The muzzles of the cannons are facing the Forth Firth River as before. It interprets the tense atmosphere of heavily defended ancient times.
Among them, there is a cannon not far outside the chapel door called "Mons Meg". This 6-ton cannon was produced in Mons, Belgium, and represented the most cutting-edge military technology of that era. . After being built in 1449, it participated in battles across Scotland; in 1558, the Mons Meg mounted on Edinburgh Castle rang at the wedding ceremony of Queen Mary; in 1681, it was used in the future James VII. It was used as a salute at the birthday celebration of the world's first emperor. Later, the cannon was transported to London and displayed for 75 years. In 1829, Sir Scott and celebrities from the Scottish Antiquities Research Society worked together to persuade King George IV of England and Mons. Meg has finally returned to Edinburgh Castle.