Fishing with a huge fishing net is traditional of fishermen in estuaries and low water areas throughout Vietnam. After lowering the net for several hours, fisherman lifts it up and sails a small boat underneath the net, open a small hole in the net to collect fishery products. The most convenient time to fish is all night, from the previous sunset to the next late sunrise. After fishing, they can earn up to 200.000 VND (about 9 USD) for a night of work.