On the scientificity of eight characters

Birthday is only a one-dimensional time coordinate; Three-dimensional space coordinates are complex and constantly changing. About 30,000 people are born every two hours in our country, which means that these 30,000 people have exactly the same eight characters. Will their fate be the same in the future? 80,000 people were killed in Wenchuan earthquake. How can their fates be so similar? So spatial coordinates seem to play a bigger role. According to the uncertainty principle of quantum mechanics, it is basically impossible to accurately calculate a person's fate.