There is a story before the birth of Christ, a Chinese named Chang Chien was sent on a mission to the western region of China by Emperor Wu-Ti. This journey is considered one of the most important missions in history as it resulted in birth of the Silk Road. Another important discovery was Ferghana (Uzbekistan) and its fast, large and powerful horses as compared to the weaker and slower Chinese horses. The emperor realised that Ferghana horses would be ideal for cavalry warfare against the troublemaking Huns. Chang is the person who opened routes westwards linking imperial China with Imperial Rome and he is described as the father of Silk Road.