1, Kaiyuan: In the fourth year of Wude, Li Yuan changed the monetary system with baht and Liang as currency names in previous dynasties, and cast them into coins, named Kaiyuan coins. "Kaiyuan Bao Tong Qian Wen" was written by Ou Yangxun, a famous calligrapher at that time, and it was the first record of the calligrapher's name in Qian Wen.

2. Dry seal full guarantee: when Tang Gaozong was in office, dry seal full guarantee was introduced in the first year of dry seal, with a diameter of 2.5 cm and a copper casting worker;

3. Deyi Yuanbao and Shuntian Yuanbao: issued by An Lushan and Shi Siming, rebels who appeared in the late Tang Xuanzong;

4. Gan Yuan Chongbao: In July of the first year of Gan Yuan, Tang Suzong cast Gan Yuan Chongbao. Gan Yuan Chongbao is 2.7 cm in diameter and weighs 5.97 grams. There are patterns such as leaning on the moon, suzaku, auspicious clouds and Xingwen on the coins.

5. Dali Yuanbao: Dali Yuanbao appeared in Tang Daizong during the New Year, which was not recorded in the history books, but it was recorded in later generations.

Note: The unified dynasty after Tang Dynasty and Sui Dynasty was 2 1 emperor, enjoying the country for 289 years. It is also called, because the royal family name is Li, and it is considered as one of the most powerful times in China.