What is the authenticity of the records in Tan Qian's National Monopoly?

First of all, Tan Qian is rigorous in his studies, so these things have credibility; Secondly, historical records can be verified by cultural relics, and can also be mutually verified with other records of the same era; Finally, we can guess the authenticity of the record according to the way. So on the whole, the records in Guoque are very real!