In Order for Me to Cultivate Immortality, My Sister Turned Me into a Woman

The protagonist Suzhou gave up on himself and lost hope in cultivating immortality because he detected the ice spirit root that only existed in women. His sister Su Su turned her brother into a woman in order to regain his hope and keep him by her side forever. And changed his name to Su Meng. Later, during an attack by the Demon Cult, Su Meng was transported to a strange place to save Su Su from falling into the whirlpool.