1) The world's first paper money was created in China over 1,000 years ago.

2) The Earth's core is hotter than the surface of the Sun.

3) Online banking and mobile banking have become increasingly popular, providing convenient access to banking services through digital platforms.

4) In Norse mythology, the Valkyries are divine maidens who serve Odin, the chief god. They are responsible for selecting warriors worthy of entering Valhalla and escorting them to the afterlife. They are often depicted as powerful and beautiful figures, riding winged horses and wielding spears.