If you want to know who you are, you must first know your birth date (there is a difference between the lunar calendar and the Gregorian calendar), birth time (preferably accurate to a few o'clock), and birth area. Otherwise, the query results may be inaccurate. In addition, you also need to know the attributes of the five elements of the ten heavenly stems: A and B belong to wood; B and D belong to fire; Wu and Ji belong to earth; Geng and Xin belong to gold; Ren and Gui belong to water.
Assume that your birth time is: 12:25 noon on September 12, 1974 in the Gregorian calendar, and your birth area is: Xinjiang Uygur Autonomous Region - Urumqi City, then we can use the online horoscope tool to arrange your birth date. It is: Jia Yin Gui You Bing Chen Gui Si. The Rizhu Tiangan (i.e. the 5th character in the horoscope) of the birth date represents yourself, and the Rizhu Tiangan is C. From the five elements attributes of the ten heavenly stems, we can know that your own five elements belong to fire.