Tallies issued by feudal rulers to their generals and officials were known as Yig-tshang. Chinese classics, such as the General Code and New Tang Annals, have descriptions on the quality and varying importance of these tallies. According to Old Tang Annals: The South, the Tang Dynasty had a good understanding of the system related to the issuance of tallies not only to Tubo officials, but also to Tubo envoys. A classic recorded the major contents of a Tallies issued by feudal rulers to their generals and officials were known as Yig-tshang. Chinese classics, such as the General Code and New Tang Annals, have descriptions on the quality and varying importance of these tallies. According to Old Tang Annals: The South , the Tang Dynasty had a good understanding of the system related to the issuance of tallies not only to Tubo officials, but also to Tubo envoys. A classic recorded the major contents of a