1) The construction of the Great Wall of China began in the 7th century BC and was completed over several centuries, spanning thousands of miles.

2) The process of nuclear fusion powers the sun and other stars, fusing hydrogen atoms together to form helium and releasing vast amounts of energy in the process.

3) Tea, originating from China, is one of the most consumed beverages globally. It is made from the leaves of the Camellia sinensis plant and comes in various types, including green, black, oolong, and white tea. Each type undergoes different processing methods, resulting in distinct flavors and aromas. Tea culture has a rich history and is celebrated in rituals, ceremonies, and social gatherings in different cultures worldwide.

4) The world's most expensive car is the Bugatti La Voiture Noire, which sold for over $18 million.