我化作人鱼仅有七秒的记忆
[wŏ huà zuò rén yú jĭn yŏu qī miăo de jì yì]
Based on the fairy tale Little Mermaid, it refers to 'My memory as a mermaid lasts only seven seconds', which evokes a sense of transience and forgetting the pain quickly like a fish’s short-term memory, symbolizing both simplicity and a possible wish to forget sorrows swiftly.