The Southern Song Dynasty was dead, the emperor threw himself into the sea, and all the nobles in the dynasty became surrendered ministers. Only the Jinyiwei hidden stakes gave way, becoming the last knife hanging on the wreckage of the motherland. Everyone thinks that Jin Yiwei is only good at ransacking homes and seizing people, but they don't know that he has a volume of "Hidden Veins of Mountains and Rivers" hidden in his mind - the world's passes, secret passages in granaries, and the Mongolian army's defenses are all in it.
When Kublai Khan wants to eradicate the roots, when the former officials are competing to change their hair and change their clothes, this shadow of no official and no rank is about to show its fangs: he weaves a web with espionage skills and uses people's hearts as blades to stir up the chaos in the court in the dark, make traitors confess in their sleep, and make Yuan Dynasty's powerful people suspicious of each other until death. His name will not be written in the history books, but every brick in Lin'an City will remember him - he can walk at night in brocade clothes and slay dragons.
