The Sole Master of the Qin Way

At the end of the age, demonic energy engulfed the world, the myriad heavens crumbled, and living beings perished. The order of the old world teetered on the brink of total collapse.

As the chaos neared its end, the Sage of the Zither, Gu Qingxian, and Feng Yuying, heir to the legacy of the Sun Lord, stood together at the world's final precipice. With her divine soul nearly spent, Gu Qingxian played her zither, unleashing its righteous music to slay the evil and darkness, exhausting her very essence to defend the world's remaining light. Feng Yuying burned through ten thousand years of cultivation, setting herself alight to summon the pure yang melody of her flute, protecting the few who remained and shoring up the foundations of the Heavenly Dao.

They abandoned their individual paths and played as one, resonating through their battered bodies and souls to perform the long-lost primal music of creation. The zither struck down evil; the flute offered protection. Their music, at once forceful and gentle, rang through all worlds, destroying the Demonic Fiend of Annihilation, dispersing the demonic energy across the heavens, and bringing the age-ending calamity to a final close. A new beginning dawned for the shattered world.

Once the calamity had passed and all living beings were safe, Gu Qingxian's spiritual power and divine soul were entirely spent. She turned into stardust, fell into the cycle of reincarnation, and vanished from the world.

With her hair turned white as frost and her cultivation utterly lost, Feng Yuying stood alone in the newborn world and swore an oath to sink beneath the mortal world. In her previous life, he had played his zither to protect the mountains and rivers and defend all living beings. In this new cycle of eternal reincarnation, she will cross the universe and its countless mountains, holding fast to a single, unyielding desire: to find her old companion in reincarnation and fulfill their zither-and-flute promise spanning the ages, true to their meeting and true to their original hearts.

This is a long song of zither and flute, buried at the end of an age and reborn through reincarnation, spanning the ages.