This was the technique of a Sage.
…
Early in the morning, a wisp of golden light illuminated the entire Huaishan Prefecture. The dazzling Golden Crow flames condensed into the Great Sun True Flame and flattened the yin and demonic energy accumulated on the ground at night. The wandering ghosts did not dare to come out during the day. Some greater demons were not willing to be exposed to the sunlight mainly because they were afraid of the Golden Crow flames.
Xin Xiang sat cross-legged in the courtyard and breathed in the aura of heaven and earth. This girl had Shen Ping to help her improve her physique. After several years of cultivation, she already had some of the temperament of a Daoist master. Her skin, bones, and face had even changed. Even the clothes of a maidservant could not hide her pearl-like face.
"Not bad. In another ten years or so, you will become a Daoist Perfected Lord and be able to slay demons!"