1991May 4th
Birthday (Lunar New Year): March 20th, the year of Wei Xin.
Eight characters: Xin Wei, Ren Chen, Jia Xu
Five elements: golden soil, water and soil, wooden soil
Yin Na: The roadside soil is always flowing and the mountains are burning.
Without time, the eight characters and five elements are incomplete. Judging from the information you have given so far, your five elements are short of fire.