《旧唐书·本纪·卷十》
十六日，开始铸造了新钱，钱上文字曰 乾元重宝 ，用一个当十个，与 开元通宝 同时通行使用。
丙戌，初铸新钱，文曰 乾元重宝 ，用一当十，与开元通宝同行用。
On the 16th, the nation started to mint new coins with the inscription "Qianyuan Zhongbao" on them. One Qianyuan Zhongbao is worth ten Kaiyuan Tongbao.
<s>[INST] Kindly elucidate the central themes in this passage in English: 丙戌，初铸新钱，文曰 乾元重宝 ，用一当十，与开元通宝同行用。 [/INST] On the 16th, the nation started to mint new coins with the inscription "Qianyuan Zhongbao" on them. One Qianyuan Zhongbao is worth ten Kaiyuan Tongbao.</s>
Kindly elucidate the central themes in this passage in English: 丙戌，初铸新钱，文曰 乾元重宝 ，用一当十，与开元通宝同行用。
user
On the 16th, the nation started to mint new coins with the inscription "Qianyuan Zhongbao" on them. One Qianyuan Zhongbao is worth ten Kaiyuan Tongbao.
assistant