Part of the World Heritage Silk Road, the site of Dingdingmen in Luoyang City, Sui and Tang Ding. It was very deserted. When I went there was a weekend, but I was the only visitor. Dingdingmen is the gate outside Luoyang City. Now it is to look at the relics and think back to the scene where Hu people gathered at the beginning of the Silk Road. The new city gate is restored or quite beautiful. There is a model of the entire Sui and Tang Luoyang City in the museum. You can clearly see the central axis of Dingdingmen to Mingtang all the way. The understanding of history can be more three-dimensional. History and culture lovers are worth a visit.