《三体》中的恒星级战舰

Can you name the capitals cities of all 196 countries in the world?

Name the 20 cities ranked as the world's top financial centers according to the Global Financial Centres Index.

20 random countries have been removed from the map of the world! Can you identify them in 3 minutes?

Click the people who died suddenly. But don't click any of the ones that died in old age or who are still alive!