The adult ticket for Chillon Castle is 15 Swiss francs, the student ticket is 12.5 Swiss francs for Swiss Army, the child ticket (6-15 years old) is 7 Swiss francs, and the family ticket is 35 Swiss francs (2 adults + 1-5 children). It is free for those with Swiss pass, and you can also get the Chinese introduction of the scenic spot at the place where you buy the ticket. There is a Chinese audio guide, which needs to be paid for 6 Swiss francs.
The castle stands on the lake, facing the water on three sides, and you can see different sea views from the windows of the rooms in the castle. It takes about 2 hours to walk around the castle and take pictures. There is also a souvenir shop in the castle, where we also bought celebrity photos and stamps. I have to say that it is convenient to buy stamps in Switzerland, unlike some European countries that often have celebrity photos but no stamps.
If you want to take pictures of the castle, you have to go out and take pictures. The online guide says that you can take pictures on both sides. We are too lazy to walk, so we went in the direction where there are more tourists and took a few panoramic pictures of the castle. You can also take a panoramic picture of the castle on the panoramic train, but we used a mobile phone, and the pixel is too low.