With the rapid development of science and technology, mankind was able to set foot on the moon forty years ago. Under today's Almighty (I'd use lower case here) scientific scrutiny, is there room for this mysterious study of judging one's future from their (one's) appearances to survive ?
In fact, the study itself is not simply a (delete 'a') hearsay or a legend. Otherwise it wouldn't (don't use contractions) have lasted for over (delete 'over') thousands of years in China. Does that mean the more civilized or highly institutionalized a society, the more people believe in it ? Well, the crux of the question lies in the ever-existing truth that every element has its tangible and untangible forms in relation to their assurances and coincidences. (this sounds a bit unclear to me)
Regarding something that's untangible and happens all of a sudden, that is beyond what scientists can tell regardless of what experiement (spelling and I'd use the plural) they intend to carry out. But the study of appearances can reveal the secret of all these untold mysteries.
What is the study of appearances then ?
That (It) is actually a (delete 'a') knowledge about one's date of birth and his (one's) appearance that presets what the future lies ahead (I'd either change the verb to 'holds in store' or change the verb 'presets') . Through long term (long-term?) observation, the prediction of the cause of various illnesses and the accumulation of unlimited experiences that resulted in the emergence of the study of appearances. (I'm a bit lost here) This is supposed to be a serious topic that can't be taken lightly.
People go to the master, because they want to know whether they will become wealthy or they would (I'd delete they and would and use will) enjoy a healthy and longer life. And also knowing more about their personality, psychology well-being or whether they are smart or just a dumber as well as the happiness in the family or success in business.(This isn't a complete sentence)
In Ron's absence, I hope this might help a bit.