C1255 Boundary seal upgrade 2

To Ling Feng, levelling up the World Seal was no longer something unfamiliar. The first fourteen upgrades allowed Ling Feng to have a middle level of cultivation in the World Seal Saint Emperor, so he was still rather looking forward to the upgrades this time.

Right now, Ling Feng was in a growth stage, with two realms behind her being metamorphosis and perfection