The story of the fall of Troy is one of the oldest stories in history. It dates back to around 800 BC, to a poem written by a man called Homer. The poem is called The Iliad(《伊利亚待》). Ilium is the Greek name for Troy.
The story is a myth(神话), but many believe the city of Troy actually existed. Some people have thought it was in modern Turkey. Others have suggested it may have been in central Europe, northern Europe or even England.
You could write a long book on all the paintings, music and stories about Achilles. His name is used for many things. Since 1744, about nine Royal Navy warships have been named after him, for example.
A Trojan horse is a saying that now means something that seems friendly, but is actually a trick to hurt you. Some kinds of computer virus (病毒) are now called Trojans. An Achilles heel means a person's main weakness. The Achilles tendon(腱) is a medical name for part of your heel at the back
