Group 1 - The article highlights the contrast in public restroom availability and accessibility between Spain and China, particularly focusing on the lack of free public toilets in Spain compared to the abundance in Shanghai [1][3] - In Spain, public toilets often require a fee, with examples of pricing such as 0.5 euros and 0.8 euros for different facilities, indicating a competitive pricing strategy among public restrooms [2] - The experience of finding free public toilets in Spain is portrayed as a pleasant surprise for tourists, emphasizing the cultural differences in public amenities [2][3] Group 2 - The article reflects on the emotional comfort provided by the presence of public toilets in China, especially for the elderly, reinforcing the idea of a "people's city for the people" [3]