So that would mean that Shang Zhuo was the forger? This case has become really complicated!

　　"The letter was written by Shang Zhuo?" Teacher Yu was still unable to regain his composure. "Impossible." He refused to believe it.

　　Although Shang Zhuo was talented in copying paintings, he couldn't possibly have forged Guo He's handwriting to write a letter like that. What would be his motive?

　　Ji Yunshu walked back from the painting and started to explain, "It's understandable that Teacher Yu doesn't believe me. However, the only person who could have replicated someone else's handwriting so accurately is Shang Zhuo."

　　"Just based on this?"

　　"Not entirely. Teacher may not know that the handwriting from a person's left hand is completely different from that written by the right hand. However well-done the handwriting forgery may be, there will always be imperfections. These imperfections have nothing to do with the quality of the forgery, and everything to do with the person's habits."

　　Eh?

　　"Teacher can compare the character for 'return', '回', between the letter Guo He left behind and one from his exercise book to see the difference."

　　What?! Teacher Yu started to flip between the two doc.u.ments, comparing the character '回' between the letter and the exercise book. Even if he put them together, there didn't seem to be any differences. Whether it was considering the weight of the brushstrokes or the flourish at the end of each stroke, it all seemed to come from the same hand. If one were to nitpick, the only difference would be the size of the characters, but that was entirely reasonable considering the difference in word positioning and type of paper.

　　He squinted at it for a long while but was unable to find any difference at all. Thus, he raised the two doc.u.ments in his hand and declared, "There is nothing at all peculiar about this '回' character. It's certainly Guo He's handwriting, I'm clear how it looks like!" No doubt! He was sure of it!

　　Ji Yunshu frowned a little. "Yes, there is no discernible difference between the two characters, but Teacher, have you noticed anything different in the s.p.a.ce around the two characters?"

　　A question, an answer; One like a teacher, one like a student. It felt almost like she was issuing exam questions.

　　Teacher Yu followed her instructions and continued looking at the two characters. Finally, he found it! Raising his head, he said, "One of the characters has a dot beside it but the other does not."