Even the Taibai Immortal Sect sent elders.
Although they feared the power of the area, they couldn't just avoid it. Instead, they decided to take a more generous approach and actively foster deep friendships with the various Immortal Sects of the Xuanxian Immortal Domain. After all, the entire Ancient Realm was vast, and any given territory was insignificant. It was possible that Jiang Chengxuan and his group's goal wasn't to dominate the area of the Huangxue Territory.
Naturally, Shen Ruyan welcomed this and showcased her newly attained Xuanxian realm strength and the foundation of the Wandering Cultivator Alliance at the grand ceremony. This was the true purpose of holding the Xuanxian Grand Ceremony — to intimidate others and display their strength, solidifying the new position of the Wandering Cultivator Alliance.