鱼有一颗心却有七秒情猫有九条命唯有一颗心
[yú yŏu yī kē xīn què yŏu qī miăo qíng māo yŏu jiŭ tiáo mìng wéi yŏu yī kē xīn]
'A fish has a heart but only seven seconds of memory; a cat has nine lives but one heart.' This implies contrasts between emotional depth, temporary attachment and loyalty.