A boy poses for photos in front of a fire truck during the Public Works Open House event in Richmond, British Columbia, Canada, May 10, 2025. Featuring interactive exhibits, equipment displays and more, the one-day event offered a behind-the-scenes look at the essential services that keep the city running smoothly. (Photo by Liang Sen/Xinhua)

People experience ambulance equipment at the Public Works Open House event in Richmond, British Columbia, Canada, May 10, 2025. Featuring interactive exhibits, equipment displays and more, the one-day event offered a behind-the-scenes look at the essential services that keep the city running smoothly. (Photo by Liang Sen/Xinhua)

People try their hands at concrete paving during the Public Works Open House event in Richmond, British Columbia, Canada, May 10, 2025. Featuring interactive exhibits, equipment displays and more, the one-day event offered a behind-the-scenes look at the essential services that keep the city running smoothly. (Photo by Liang Sen/Xinhua)

A girl explores a tractor during the Public Works Open House event in Richmond, British Columbia, Canada, May 10, 2025. Featuring interactive exhibits, equipment displays and more, the one-day event offered a behind-the-scenes look at the essential services that keep the city running smoothly. (Photo by Liang Sen/Xinhua)

A worker demonstrates water pipe operations during the Public Works Open House event in Richmond, British Columbia, Canada, May 10, 2025. Featuring interactive exhibits, equipment displays and more, the one-day event offered a behind-the-scenes look at the essential services that keep the city running smoothly. (Photo by Liang Sen/Xinhua)

A man looks inside a sewage pipe during the Public Works Open House event in Richmond, British Columbia, Canada, May 10, 2025. Featuring interactive exhibits, equipment displays and more, the one-day event offered a behind-the-scenes look at the essential services that keep the city running smoothly. (Photo by Liang Sen/Xinhua)