Antarctica, known as the Seventh Continent, is the last continent on the earth to be discovered and the only one without human settlement.

Tokyo, formerly known as Edo, was the seat of the Tokugawa shogunate, which was renamed Tokyo in July of Qingying 4 (September 1868).

Wuyuan County is dominated by metamorphic rocks, with few sedimentary rocks and weak magmatic activity

Europe ranks sixth in the world in terms of area and population density of 70 people/km ²， It is the third most populous continent in the world, second only to Asia and Africa.