Feng Shanzhang carefully examined the letters, and then, following Gu Xin's method, compared the same characters in the two letters and found the same strokes in the different characters.

The more he looked at him, the more he realized that Gu Xin was right.

Then he took out the two letters and looked at them separately. When he looked at them individually, he didn't notice any difference. But when he compared them and paid attention to certain strokes, he could actually see the difference.

Especially at the end of a stroke, you can see it if you look closely.

Headmaster Feng looked at Gu Xin with surprise.

Gu Xin said, “I know people who can imitate calligraphy exceptionally well, to the point of being indistinguishable from the real thing. But clearly, this person who imitated it cannot. However, his technique is also very good; most people wouldn't be able to tell the difference. One of these letters is a letter from Qi Yulang to Miss Feng. So, there are two conclusions: either neither of these letters was written by Qi Yulang, or one of them was written by him. I heard from Madam Feng that after Qi Yulang began his formal education, he studied at the Feng family's clan school. I wonder if Headmaster Feng is familiar with his handwriting?”

Feng Shanzhang frowned, carefully examined the two letters again, and shook his head, saying, "On their own, they all seem to be Yulang's handwriting. But when compared, I really can't tell which one is Yulang's handwriting."

Gu Xin pursed her lips and said, "Someone, go to Madam Feng's place and bring Que'er here!"

Cui'er and Liu'er remained kneeling on the ground, and Gu Xin did not tell them to get up.

Of the two conclusions just drawn, Gu Xin leans more towards the latter: one letter is in Qi Yulang's handwriting, and the other is a forgery.

As Qi Yulang's aunt, Madam Feng recognized it at a glance, and Master Feng, who had devoted his life to scholarship and was once Qi Yulang's teacher, also immediately thought that it was written by Qi Yulang.

Therefore, the person who imitated Qi Yulang must be someone who is very familiar with him. She must have at least one of Qi Yulang's books, otherwise it would be impossible to imitate it so well.

Another point is that Qi Yulang is very learned and has a good chance of passing the imperial examination this year. Given that he has achieved such success at such a young age, he must have put in a lot of effort in his studies. Such a person would definitely not be careless in his handwriting.

Qi Yulang's calligraphy is excellent; he is undoubtedly one of the best among all the students.

Anyone who can imitate such a stroke of calligraphy must be quite learned.

Gu Xin frowned more and more; the case seemed to be getting more and more complicated.

It was already afternoon. Several hours had passed since she prepared to leave Qiyun Temple in the morning, and Gu Xin's brain had been working non-stop. Even after eating a jade bead, she was feeling a little tired.

"This servant greets the princess and the master!" Soon, Que'er arrived.

"Que'er, you said before that Qi Yulang wrote letters to Miss Feng, and you always retrieved them from the dog hole, and you never saw the messenger. Is that true?" Gu Xin asked directly without saying much.

"Yes, that's how it is." Que'er looked at Gu Xin with a confused expression, but perhaps because of nervousness, her fists were clenched tightly.

Gu Xin glanced at her hand and continued to ask, "Then the letter that Miss Feng asked you to deliver was also left in the dog hole? She never told you to wait and see who came to pick it up?"

"No. The young lady never gave such an order," Sparrow replied.