Dong Hai Xun Mei Ren

In a past life, the mountain goddess took in a quiet child, only to find that the little one didn't want to be her servant, but instead aspired to become her intimate companion! But fate played its cruel hand, turning the once inseparable pair into bitter enemies? In this life, a cute, water-fearing mermaid happens upon an aloof beauty with no memories of her past. A chance kiss during their first meeting is just the start of their chaotic relationship. However, what had seemed to be a serendipitous meeting turns out to be a long-fated reunion with roots reaching deep into the past... From lifetimes past to present, an obsessive love flourishes... (Source: Bilibili, translated)