影下古镇小巷少年依旧影下凉城小街姑娘还在
[yĭng xià gŭ zhèn xiăo xiàng shăo nián yī jiù yĭng xià liáng chéng xiăo jiē gū niáng hái zài]
In simple terms, it refers to timeless romance and memory of young people under the shadow in old towns and quiet streets. This phrase captures nostalgia of youth and love enduring the passage of time in quaint town settings.