 Complete the following phrase:  Like his father, Pacorus sought to accomplish the goal of Artabanus II , by attempting to establish a long and structured trade-route that spanned through East Asia, India and the coast of the Mediterranean Sea. This planned long trade-route would greatly improve the economy of the Parthian Empire. In order to accomplish this, Pacorus strengthened relations with other powers whom he was able to establish long distance trade with, most notably Han China. In 97, the Chinese general Ban Chao, the Protector-General of the Western Regions, sent his emissary Gan Ying on a diplomatic mission to reach the Roman Empire. Gan visited the court of Pacorus at Hecatompylos before departing towards Rome. He traveled as far west as the Persian Gulf, where the Parthian authorities convinced him that an arduous sea voyage around the Arabian Peninsula was the only means to reach Rome. Discouraged by this, Gan Ying returned to the Han court and provided Emperor He of Han  with a detailed report on the Roman Empire based on oral accounts of his Parthian hosts. The modern historian William Watson speculated that the Parthians would have been relieved at the failed efforts by the Han Empire to open diplomatic relations with Rome, especially after Ban Chaos 