Here is a detailed description of the video: The video shows the Hangzhou Grand Convention and Exhibition Center, with people walking in front of the entrance

Here is a detailed description of the video: The video shows the Hangzhou Grand Convention and Exhibition Center, with people walking in front of the entrance. **People:** There are several people visible in the video. They are dressed in casual attire and appear to be entering or leaving the convention center. Some are looking at their phones. **Objects:** The main object is the convention center building, which is large and modern with a glass facade. There are also banners and signs advertising the "Auto Hangzhou" exhibition. **Actions:** The people are walking and looking at their phones. They seem to be heading towards or away from the entrance of the convention center. **Interactions:** The people in the video don't seem to be interacting with each other. They are all focused on their own activities. **Environment:** The environment is a paved area in front of a large building. The sky is overcast, indicating a cloudy day.