‘Do not hesitate over filthiness and difficulties’ is the group’s spirit, said Ngo Nhat Duy, a 23-year-old resident in Phu Yen Province, south-central Vietnam, and a member of the Sai Gon Xanh squad. ‘Many canals and ditches are deep, so we are unable to wade into the water to pick up all the garbage. They clean up canals between 6:30 am and 10:00 am every two to three days. ‘Do not hesitate over filthiness and difficulties’ is the group’s spirit, said Ngo Nhat Duy, a 23-year-old resident in Phu Yen Province, south-central Vietnam, and a member of the Sai Gon Xanh squad. ‘Many canals and ditches are deep, so we are unable to wade into the water to pick up all the garbage.