各位大哥！帮帮忙！阅读

One day, the famous mathematician Hua Luogeng received an ordinary secondary school teachers in a letter from the youth, the letter said: "I have read your writing" stacking prime number theory, "that the good of this writing, but after repeated accounting, a problem that the calculation wrong. It is just like in the Pearl cast a fine dust, I hope you can correct. "Hua Luogeng read the letter, Opening the book, a re-count, really wrong, he full of praise:" It's very good, his views completely correct, he is very talented. "Hua Luogeng from its own mistakes and found a rare talent . He later became a famous mathematician Chen Jingrun.
(1) contextual links below explain the meaning of the term.
Praise:
(2) "Hua Luogeng from its own mistakes and found a rare talent," What is this sentence you understand?