People in Japan like to visit theme parks. They like dangerous rides and roller coasters. Now, many theme parks have a new rule. Visitors must not scream on rides. The reason is the coronavirus(冠状病毒).
People sit close to each other on rides. The coronavirus moves in the air. The coronavirus can move more easily when people scream. People must stay quiet.
A theme park releases a video. In the video, two park workers ride a roller coaster. They are wearing masks. However, they stay calm during the ride. They do not scream. The theme park says that visitors can scream in their hearts.