How to choose a date for digging fish ponds and geomantic omen

Some people just don't like to show off. Digging a fish pond for a lucky day has strict methods for choosing a day: otters are the most taboo in fish ponds to steal fish, and it is advisable to use Tiangou to sit in the pond on the day of digging, when Tiangou doesn't eat the day, the dark gold will hide the day, and the tail fire tiger, white water leopard, Kuimu wolf and Lou Jin dog will be selected. Four nights can bring down otters. The drainage hole should be in the square. Another choice is to let fish go to Tangjiye on a prosperous auspicious day.