Hong Kong has been around since the Stone Age. It became part of China under the Qin Dynasty. In 1842, the British Empire took control of it. During WWII, the Japanese took control of it from1941 until 1945. Britain regained control of it after the war. In 1997 control went back to China, although Hong Kong retained it’s own law.
It has the most skyscrapers in the world because it’s so densely populated.
The Tsing Ma bridge is the longest road and rail suspension bridge in the world.