caption: The image shows a group of people standing in front of a welcome sign, some of them holding bags in their hands. There is an arch with balloons in the background, and a banner with text on it. On the right side of the image, there is a screen on the wall, and at the top of the roof, there are lights. The people in the image are wearing face masks, indicating that they are part of the Chinese government's efforts to stop the spread of Covid-19.