Search on Baidu-enter your birth date for fortune telling, write down the date, choose the lunar calendar for the lunar calendar and the solar calendar for the solar calendar.
After that, you will get the eight characters and find out the five elements of the eight characters. You can search online-refer to the five elements of the eight characters and find out what the five elements of your eight characters belong to. Find another eight characters in the same way, and compare two eight characters on a piece of paper to see if the five elements of eight characters are mutually gram-proof, that is, incompatible.