Essence, Essence Blood?
Tuoba Yu'er was even more puzzled.
Seeing her excited grandfather, Tuoba Yu'er felt somewhat excited too.
"Grandfather, is he really the Emperor Yu of Tiandu Mountain?"
"That's right, your grandfather won't be mistaken. When I knew him, you weren't even born yet. I never thought... after so many years, you'd actually get to meet him. Child, there's destiny between you two!"
At this moment.
He completely understood what this was,
This was an array engraved with energy magic patterns, containing powerful energy.
Only then did Song Gusheng understand why they did this; it was to prevent someone from picking up the letter, hence the array formation restriction.
Only cultivators in Wanxian City who are skilled in arrays can unravel it.
Once they perceive the powerful force on the array, they'll surely take it seriously.
This is indeed a letter of introduction.
Song Gusheng was growing increasingly excited and said:
