From the five elements, one represents a white water and prosperous wealth; Six, on behalf of six white gold raw water, prosperous luck. From the river chart, one and six are water, two and seven are fire, three and eight are wood, and four and nine are gold. From this point of view, one, three, six and nine are all very auspicious feeding quantities. In fact, from the perspective of geomantic omen, it is hard to say how many arowana are good, and it has something to do with the date of birth of the owner.