The square
4-9-2 over 3-5-7 over 8-1-6; every row, column and diagonal sums to 15. The Lo Shu is older than numerology and was adopted by it.
Filling it
Date digits with zeros discarded, then Origin, Master and Kua numbers in the Indian convention. Each digit is written into its cell; a cell can hold the same digit more than once.
A worked example
This part is worked out by the calculators: open the calculator.
Repeats
A number present twice reads as that quality reinforced; three or more times as an excess of the same quality.
Empty squares
A missing number is a quality to build or borrow; the missing-numbers article lists the traditional supports for each.
Frequently asked questions
Why is the 5 in the middle?
It is the centre of the magic square and sits on four planes.
Do zeros count?
No; they are discarded before filling.
Which convention does the report use?
The Indian fill, with the raw fill available as a toggle on the calculator.