For decades, many residents in Shanghai's old town relied on chamber pots instead of flush toilets. To tackle the issue, the city mobilized teams from municipal to neighborhood level, going door to door, hearing residents' needs, and tracking progress month by month. Starting in the 1990s, Shanghai concentrated on old neighborhood renewal. In 2022, the city effectively ended large-area reliance on chamber pots. A citywide survey in 2023 then identified over 14,000 remaining households without sanitary facilities, prompting a two-year upgrade plan. By this September, the city finished the entire "chamber-pot to bathroom" transformation.