Before Zheng Chenggong set out for Pidao, the news had already circulated among the high command of the army tasked with "pacifying the Liaodong region."
This was not due to a failure in operational security. Rather, because Wang Yongji was the Governor-General of the Liaodong Pacification, the movements of all units had to be reported to him. To prevent accidental fire against friendly forces, he was required to share this intelligence with other commanders.
Upon receiving the news, Wu Sangui lost no time in sending word to Dorgon.
Chapter 1102