Original God: the Holy Demon Art of the Heart

[Semi-plot + Wu Kongying + Wu Dao + Nitian Flow] Liu Yanyun, a boss from another world, was obsessed with the original god, so he traveled to the Teyvat continent five hundred years ago. He took the Great Ci Tree King to travel across the starry sky for thousands of years. He adopted Su Jianyun as his adopted son, created his own technique "Heart Dao Holy Demon Art", killed the strongest man in the starry sky and founded the Sacred Heart Sect single-handedly, and sent Su Jianyun to the Teyvat Continent for training. After Su Jianyun traveled to the Teyvat continent, his memory was reset and he became Nasida's brother. However, during the first rescue of Nasida, he was killed by [Doctor], and his soul escaped into the boundary of life and death. After sleeping for five hundred years, he woke up and returned to the earth. Emperor Yan Wang helped him reshape his body, while Su Jianyun helped Liyue survive the disaster of the demon god Osel. After the Liyue disaster, Su Jianyun underwent special training in the "Heart Dao Holy Demon Art" and his level increased dramatically! Su Jianyun took Nasida back to Xumi City, but no one among the people of Xumi who were under the rule of the God of Zhengji and the Teaching Council remembered the Little Lucky Grass King anymore. "If you snatch something that should belong to my sister, even if it is a high-ranking god, I will cut him down into the abyss!" In anger, Su Jianyun organized an army of ten thousand people to launch an uprising, overthrew the tyranny of the Order Council, defeated the God of Opportunity, and killed [Doctor]. However, Su Jianyun and Naxida attracted the attention of Heavenly Law because of their practice of "Heart Dao Holy Demon Art". Su Jianyun cultivated "The Art of Holy Demons of the Heart" to great perfection, and killed Tianli in one fell swoop. From then on, he and Naxida lived in seclusion in a paradise, regardless of worldly affairs, and did not care about the worldly affairs, and became a couple of gods and immortals.