Two stops from Guandu Northbound are "Mangroves". When I left the station, I asked the staff in the station how to go to the mangroves? After leaving the station, go left. Out of the station, it is a wide avenue. Not far north, there is an open, inconspicuous iron gate on the side of the road, a path extending to the endless green forest in front. The sign next to the door reads: "Mangrove viewing trail, bicycle do not enter". As the road to the forest, the asphalt path becomes a suspended wooden plank road erected on the marshland. At the entrance, there is a "Guide map of the Vale Mangrove Nature Reserve", which clearly shows the landscape of the protected area. It also shows that the length of the viewing trail is about 500 meters.