That picture does not show fishing boats nor does it show debris. I know exactly what it shows as have flown over this very spot many many times and always stare in amazement at these lights. To the east of VVTS is a large area where they grow flowers. This is a picture of these fields (greenhouses) where they grow the flowers they are lit up at night. It is unmistakable, flying from HKG to SGN it is just prior to TOD.