Fang Yue and Wanniang arrived in Nanchu months before Zhou Gu, soon after Su Rong entered the royal capital Daliang. They had long familiarized themselves with the power structure of the Nangong Family in Nanchu.
As soon as Zhou Gu and Zhang Yun set foot in Daliang and started to dismantle the Nangong family's secret agents, Fang Yue and Wanniang discovered their actions. But they didn't dare to rashly interfere, fearing it could disrupt Zhou Gu's plans, so they just silently observed the changes.
This silent observation turned out to be a mistake. When they decided they could no longer just watch passively, they couldn't find Zhou Gu anymore.
During the most difficult time, Zhou Gu only activated the Crown Prince's secret agents located throughout Nanchu. He didn't even think about Su Rong's people, and moreover, he didn't know how to contact them.
When he left the border of Daliang, he didn't wait to meet Su Rong again, but left directly.