Jade has a history in China of at least four thousands years. Unknown to some, jade is found contained within the development of religion and civilization, having moved from the use of decoration on to the others such as the rites of worship and burial. Although other materials like gold, silver and bronze were also used, none of these have ever exceeded the spiritual position that jade has acquired in peoples' minds - it is associated with merit, morality, grace and dignity. In the funeral objects of the people of the Western Han Dynasty (206 BC - 24 AD), for example, we can see only high officials were buried with jade articles.