Penglai Immortal City.
As the head of the human sects in the western district of the Abyss of Supreme Darkness, the Tai Hua Sect also received the news from the sea of stars immediately. After knowing that the defense line was about to collapse, its Grand Elder, Hua Yun, who was a Tenth Tribulation Itinerant Immortal, immediately gathered the upper echelons of the sect and announced that the sect was sealed.
Although the main target of the alien Immortal Dao experts in the sea of stars was Gray Stone City, as the saying went, if a fire broke out at the city gate, it would implicate the fish in the net. Their Tai Hua Sect had no resistance against such a powerful alien Immortal Dao faction. Furthermore, the alien Itinerant Immortals would not let go of such an opportunity. They would definitely take advantage of the situation and destroy the human sects.
Therefore, sealing the mountain was the best choice at this time.