A man carries a chamber pot in older Shanghai neighborhoods in 2018. /VCG

This photo taken in April, 2021 shows an old neighborhood in Shanghai. /VCG

On August 31, 2008, a worker installed a flush toilet in the home of Ms. Fan, who had lived in Shanghai's old neighborhoods for more than 50 years. /VCG

A resident wipes a flush toilet after the toilet renovation project in Yangpu District, east China's Shanghai, October 29, 2025. /Xinhua

This photo taken on October 31, 2025 shows the construction site of a sewage pipeline renovation project in an old neighborhood in east China's Shanghai. /Xinhua

This photo taken on December 7, 2024 shows an old neighborhood in Shanghai after the completion of a housing renovation project. /VCG