On patrol with the last traditional night watchman

On a serene night, with a luminous moon gleaming above eastern China's Likeng village, 74-year-old Yu Jiajiu - perhaps the country's last traditional night watchman - sets out to work with his gong and mallet.

Yu has patrolled the village's streets, lined with historic wooden houses, for decades, sounding out the hours with his gong to remind villagers of the time and alerting them to fires and thefts.

He may now be the last night watchman performing dageng, a centuries-old time reporting service whose functions have gradually faded away.