z南巷少女未离开z北巷少年一直在
[z nán xiàng shăo nǚ wèi lí kāi z bĕi xiàng shăo nián yī zhí zài]
'The girl from South Alley never left while the boy from North Alley always remained'. This romanticized scene likely alludes to a pure but unrequited youthful love story preserved in the memory.