金兵南下之前,派遣大量间谍刺探南宋情报。公元1161年9月,金国燕京人刘蕴古受命诈降南宋,刺探南宋朝廷机密。 刘蕴古为了与南宋朝廷搭上关系,就装成贩卖首饰的商人在南宋一带活动。他经常故意泄露一些金国的机密并夸下海口:取中原,灭大 Jinbing south before sending a large number of spies to spy on Southern Song intelligence. September 1161 AD, Jin Guoyan Liu Yun ancient ordered to plunder the Southern Song Dynasty, spying on the Southern Song court secrets. Liu Yun ancient order to catch up with the Southern Song Dynasty court, mounted on the business of jewelry trafficking activities in the Southern Song Dynasty. He often deliberately leaked some of the secrets of the Golden State and boast of the seaport: take the Central Plains, destroy the big