1.2 The mathematical theory of these two numbers is wood, which is suitable for people with eight characters and five elements and few trees.
3.4 The mathematical theory of these two numbers is fire, which is suitable for people with eight characters and five elements and less fire.
5.6 The mathematics of these two numbers is soil, which is suitable for people with eight characters and five elements and less soil.
7.8 The mathematics of these two numbers is gold, which is suitable for people with eight characters and five elements and less gold.
0.9 The mathematical theory of these two numbers is water, which is suitable for people with eight characters and five elements and little water.
Look at the five elements, and use whatever is missing. 09 or 12 will do. The mantissa of several digits is preferably 0,9, 1, 2. For example, the license plate number is DYJ299 2+9+9=20.