The Phoenix Chirps and the Nine Heavens Sword Knocks on Reincarnation

After the Heavenly Demon Tribulation ten thousand years ago, the aura of the Qingxuan Realm withered, the spirit transformed into a secluded person, and the Nascent Soul was revered. The Yunmiao Sect of the Southern Territory, which used to be a giant in the immortal world, has now declined. Su Yueyuan, an orphan girl whose country was subjugated, struggles to survive in the Immortal Sect with her stupid sister. She had two high-grade spiritual roots and became a disciple of the elder. She only wanted peace for herself and to protect her ignorant loved ones behind her. Little did he know, within that idiot's body, there was a ray of obsession of the last Immortal King sleeping, intertwined with the soul fire of the Phoenix clan, giving birth to a world-shattering edge in the chaos. When the sect competition breaks out, when the war in the Northern Territory reignites, when the demon in the Western Territory comes again... The gentle and tough girl and the cold and ignorant "idiot" are forced to get involved in this turbulent apocalyptic chess game. The road to immortality is rugged, but obsession will never die! This is the story of a pair of "sisters" who depend on each other in the twilight years and hold swords in troubled times. (No system, decisive in killing, slaying if possessed, rebirth, sword repair)