Chapter 436 Charming Gu

"Oh, Professor Xue seems very familiar with Gu technique?" Lin Tian exclaimed happily.

Just now he had merely thought that Professor Xue had some understanding of Gu technique, but this statement indicated that Professor Xue's knowledge was not just superficial; it was quite profound.

"I know a bit," Professor Xue humbly said.

"Professor Xue just said that Gu technique is passed down orally without written records, why is that?" Lin Tian asked, puzzled. Such a magical thing, why not pass it down through writings? Oral traditions tend to be lost over time.