The 八字秤骨 (ba zi chen gu) is a famous methods of fortune telling from Tang Dynasty. The accuracy was very high that the method was applied widely until now.
This approach believe that the birthdate and birthtime of person can be use to determine the luck of person's life which includes good or bad fortune, rise and fall of honor, good health or bad health and ultimately the destiny of a person.
The birth year, month, day and time of each person determine their own weight of fortune. The weight has specific provisions of fortune. The minimum weight is 2.2 and maximum weight is 7.2. Person that born with 7.2 of fortune weight is destined to rule an empire with millions of people.