Prehistoric: Crossed the Sky and Robbed Laozi Tower

It penetrated into the sky, but it still didn't transform in the clear air. The Xuanhuang Tower of Heaven and Earth hangs above my head. This is my future treasure. The system pops up the option: take it away and exchange it for the Supreme Sword Intent. When I reached out to pick up the tower, a cold snort came from outside Kunlun Mountain. That is the voice of Taiqing Laozi.