鱼有一颗心唯有七秒性猫有九条命唯有一颗心
[yú yŏu yī kē xīn wéi yŏu qī miăo xìng māo yŏu jiŭ tiáo mìng wéi yŏu yī kē xīn]
The user compares themselves with fish, which are rumored to only remember things for seven seconds (though this isn't biologically true), and cats known by the saying 'cats have nine lives,' symbolizing different perspectives on memory and survival. However, the latter half clarifies the singularity of both creatures’ hearts.