Before taking the plane, we had a quick look at Chongli Gate in Seoul and Dahan Gate nearby. Every day, there was a guard's antique changing ceremony. We happened to meet each other. We took a farewell photo. No wonder we used to call it "Seoul". Unfortunately, Chongli Gate is a rebuilt building. The original city building was completely destroyed by fire in 2008. The security work is questionable. It also happened to meet the mascot of the "Pingchang Winter Olympic Games" in Seoul Square.