What is the origin of Gansheng Yuanbao?

After the demise of the Tang Dynasty, there were five dynasties and ten countries in history. At the beginning of the Five Dynasties, Liu Shouguang, the son of Liu Rengong, changed the name of "Dayan Emperor" to "Yingtian" in the first year of Hou Liang Ganhua. In the year of Tianyuan (9 1 1), Liu Shouguang cast Yingtian Yuanbao (back to heaven) and then cast dry Yuanbao (back to hundred). Beiyan is a very small political power, which only existed for three years (9 1 1 year -9 13 years). Ying Tianyuan Bao and Gansheng Yuanbao are both trial coins, and the amount of existence is very rare. Hua Guangpu's Collection of Ancient Coins in China classifies this coin as a first-class coin, and there is no pricing. It's Ping 'an Shengbao (Bai Bei), with a diameter of 33mm and a weight of15.3g. ..