During the construction of the bridge, an old man in shabby clothes came to the busy building site and shouted "Who wants Longmen (Dragon Gate) Stone?" He got no reply as the others took him as crazy. The poor man left with the stone in great disappointment. He stayed under a big tree, and every day, he chiseled the stone. After a year went by, the old man said goodbye and left the stone. At the same time, the project of the Seventeen-Arch Bridge was almost finished except for a proper stone to fit the gap in the middle of the bridge. To everyone's excitement, the poor man's stone was exactly the right one to fit the gap. Suddenly someone realized, "The old man must be the incarnation of Luban (the earliest ancestor of carpenter) who came to help us to build the bridge!"
Legend about this bridge
