Chinese garden design dates back to ancient times. Accounts can be found in the earliest works of Chinese literature, including the Shi Jing (Classic of Poetry), which described the building of gardens and palaces as far back as the reign of King Wen of Zhou. After conquering the other six rival states, the First Emperor of Qin created Shanglin Park south of the Wei River, an imperial hunting preserve spreading for hundreds of li. In addition to the construction of temporary palaces which served as residences and used for court business, a large number of rare beasts and birds were collected for hunting. The zoological park was further expanded during the reign of the Emperor Wu of the Western Han dynasty to incorporate tracts of land which stretched all the way to the south of the capital city, Chang’an. Beyond gardens such as Shanglin Park which focused on natural landscapes, purely artificial gardens were also created for palaces such as Jianzhang Palace. Confucianism rose as the main state ideology during the time of Emperor Wu who, at the same time, believed firmly in the immortals. Within the palace, Emperor Wu constructed Taiye Lake with three artificial islands—Penglai, Fangzhang, and Yingzhou—built in the center to represent the Isles of the Immortals in the East Sea. This practice of building representations of the Isles of the Immortals inspired and spawned countless gardens and palaces built by successive kings and emperors, representing one of the first attempts to create an idealized copy of nature with symbolic and imaginary elements. Luoyang became the Han capital at the beginning of the Eastern Han dynasty. Although garden construction from this period did not flourish as much as that in the Western Han, designs sought to create refined and elaborate gardens.