Continuing along, we reached boundary marker 87, which marks the highway border crossing. This crossing is open to visitors for 25 yuan, but only for Chinese citizens; foreigners are not allowed. We went to buy tickets, but there was no one at the ticket office. A staff member sitting at the entrance said entry was free with an ID card—no charge today! Great! Continuing along the riverbank, we arrived at the border crossing. There are two bridges here; the older one is for tourists, and the newer one is for vehicles, with its entrance connecting to the customs building. The highway border crossing bridge is 514.92 meters long in total, with the Chinese section being 98.08 meters. We used the pedestrian bridge, which was our closest point to North Korea. The two countries are separated only by an iron gate. Many people were taking photos here.