Not long after receiving the order from Liu Bei, the entire Fenggao began to stir. There was much to be moved, especially involving a Xuanyuan Cauldron. It should be known that quite a few immortals in this world covet such a rare treasure.
Due to the crucial importance of safety along the way, if any bold immortals did attempt to intercept, it could cause great harm to this family-centered convoy.
This is also the main reason Liu Bei dispatched Zhao Yun to escort the family members. One should not worry just for the sake of worrying; it's best if the immortals don't appear. But should they appear, there must be means to deal with them, rather than pinning hopes on the enemy not showing up.
As for Ma Yunlu, she had returned to Yongzhou not long ago. After all, her initial reason for sneaking out was to look for her father and brother. Although Zhao Yun's letters to Ma Teng later explained the whole situation, it doesn't mean Ma Yunlu can avoid returning home during the New Year.