After leaving Wanren Mountain, Su Rong tied the letter written by the Nanchu King to the leg of a flying eagle, delivering it to Wanniang. He asked her to send people to Xiling to call for the fifty thousand Xiling troops privately held by the Nanchu King, to quickly intercept Dawei's secret agents. He also dispatched half of his shadow guards, faster than the fifty thousand troops, to step out ahead and head to the Dawei border in advance.
It would take even the closest route half a month to travel with fifty thousand cavalry.
Although Su Rong was burning with urgency, he could do nothing but hope that upon receiving the Nanchu King's letter, Cheng Yun would be able to intercept Dawei's secret agents.
The assassination of Nangong Yin caused a shockwave through the entire Nanchu Capital.