As the joint forces of several top major sects made their way to Qianji Lake, Zhang Yang and his group were already cleaning up the battlefield at the Yunxiao Palace stronghold.
The strongholds of Shouyi Temple and Yunxiao Palace were adjacent to each other, very close indeed.
From Qianji Lake to the Yunxiao Palace stronghold, it would take no more than half an hour.
Including the battle and the cleanup of the two strongholds, it would take at most two days.