A practice initiated by Xi Jinping, then Party chief of Zhejiang province, during a visit to Pujiang county 20 years ago has proven effective in preventing problems at grassroots level from escalating, and helped officials to promptly adjust government policies based on people's needs.

A revisit of Pujiang takes us back in time to see how the practice came into being, how it helps solve local people's problems and why it has been adopted by governments across the province and country.