节奏文明，铁道文化，胶济铁路，书信文化博物馆，趵突泉，济南

在济南，我听见了三种文明的声音：沉默的铁轨、仍在书写的字、以及泉水不息的回响。铁未响，但信已寄；泉在流，文明未断。In Jinan, I heard three sounds of the city’s civilization — the stillness of the railway, the words being written, and the endless murmur of the springs. Even when the trains are quiet, the message continues to travel; the water keeps flowing, and the spirit of civilization lives on.