In days past, the Great Chen Saint Ancestor Xuantian Sacrifice was known for his profound knowledge and extraordinary talent. Whether it was the Divine Court or the YuanLong Sea, or even the more ancient Ancestral Dragon Hall and the Longevity Sect, or the Cultivation Techniques of the Blood Sea Demon Sect, he had all delved into and studied them.
Ultimately, with this all-encompassing Great Dao as his foundation, he forged the Heavenly Undying Tree as his companion, refining a hundred scriptures, discarding the dross and retaining the essence, integrating the essence of all, thus creating the Merit of the Great Chen Imperial Court spanning thirty thousand years.
Seeing a similar Dharma Gate here is not too surprising, as the Saint Ancestor had indeed ventured into the Zhaolin Realm for tempering, and over the many years that followed, the blood of the Great Chen Imperial Court also came to this place.