Shining their flashlights into the darkest corners of Singapore, a small group of ant hunters searches for an elusive winged insect.
With luck, they will find a queen ant to lay eggs and start a colony under the watchful eye of a collector.
Chan also organises ant-hunting trips to teach people how to find and catch the tiny insects that he says can hold his attention for hours.
"Some people can stare at an aquarium for hours. Same, just like my ants," Chan said.