In fact, the Sword Emperor still lies in the tomb, which also relates to the difference in body refining. In the recent great tide of God and Demon awakening, he didn't catch up because he mainly focused on the sword body. Unlike the blind, who can even discard the body and use the Heavenly Book as the body without any concern.
Zhao Changhe thought Yue Hongling had a bit of a desire to leave again this time, but unlike before when she wanted to roam the world without a goal, this time she had a specific destination: she wanted to take a look at the Sword Emperor's Tomb.
With her current cultivation, she really doesn't need to cling to Zhao Changhe to go... They'll arrange it when everyone's time allows, as it is indeed something that should be put on the agenda, otherwise, it's always like a ticking time bomb buried there.
