Frankfurt Iron Bridge, one of Frankfurt's iconic attractions, is located on the banks of the Main River, near the Roman Square. Iron Bridge, also known as the Iron Bridge (Eiserner Steg), is named after the folk association that raised funds to build the Iron Bridge. At the two ends of the Iron Bridge is the new and old center of Frankfurt. The Merin River is the most prosperous and charming place at this end. If the beautiful girl is beautiful and attractive, the iron bridge is not called the concentric lock bridge, because there are many kinds of shapes, colors and materials on the iron bridge. The lock is called the concentric lock, because people give the lock a concentric meaning. Concentric lock bridge, once, was compared to the Chinese people as the Qixi Bridge, also used to be likened to the lover bridge or Valentine's Day bridge. The original function of lock is to close things or people, so that the closed things are not taken away or freed. Lock things, lock people. Lock, means closed, cold feeling. Concentric lock, locking the second heart, inseparable, is really a beautiful and innocent hope. Like the oath of the sea withered and stone rotten. Come to Japan long. It turned out that both China and foreign countries were so innocent and romantic. The meaning of the bridge is a link. The meaning of the lock is a kind of closure. Combining links with closure is a creation. Maybe it just happens to be a national identity. The Germans have been rationally precise, but historically have also gone through a frenetic and extreme journey. The far east is experiencing a big test of bridge and lock coexistence. Expect, well, come to Japan.