When modern financial analyst {Lu Yan} was studying the monetary history of the two Song Dynasties, he touched a Xining Yuanbao from the Northern Song Dynasty and accidentally traveled to the Shaoxing period of the Southern Song Dynasty. He discovered that Jin Guozheng was secretly forging the "Huizi" banknotes of the Southern Song Dynasty in an attempt to disrupt the economy and win without a fight. With professional financial knowledge, Lu Yan assisted Yue Fei in establishing the "Anti-Finance Financial Bureau" to rectify the monetary order, combat the circulation of counterfeit currency, and accurately predict the military movements of the Jin army through price fluctuations. He strongly advised Song Gaozong to support the Northern Expedition, but was framed for exposing Qin Hui's financial collusion with the Jin Kingdom. After Yue Fei was killed, Lu Yan lived in seclusion with his currency reform plan and devoted his life's efforts to writing the "Minutes of the Currency Policy", which paved the way for future financial reforms.
