Why can the eight characters without complete support be considered as killing each other?

Your four pillars and eight characters are heart, Ren Chen, Ren Xu and Xin Chou! The fortune teller told you that your horoscope is to kill Yin Sheng and kill Seven. That's because our birthdays are mainly in the order of months, and the five elements are the most powerful in the month of birth! You were born in Chen Yue, but you still exist in the form of bentonite, which is the seven kills! In addition, your annual column is positive, and heavenly stems and earthly branches's five elements are the same! Because the earth branch and the earth branch will produce unitary gold! So the fortune teller told you that this is called killing each other!