Although Fan Xian killed Cheng Jushu, he did not give up on tracing the man behind the scenes.Wang Qinian brought the latest news. Although the two female assassins on Niulan Street appeared to be the disciples of Dongyi City's Four Swordsmen, there was someone else behind them.Fan Xian suddenly thought of a courtyard where Cheng Jushu was originally placed, and after searching, he found the token of the Northern Qi spy.Wang Qinian expressed his willingness to go back to the Inspection Institute to investigate a secret report for Fan Xian, and took the opportunity to tell Fan Xian many clues about the assassination on Niulan Street, and the two of them investigated separately.