Eliminating Suspects

"Xu Lan! Why did you call me to come over! I have many manuscripts to write, I have no time for you!" Shen Xiang said without giving any thought about her image when she looked up and saw Xu Lan smoking on the third floor. Although she was quite fond of Xu Lan before this happened, it was still not enough to replace Wu Wendi's place in her heart.

Xu Lan invited Shen Xiang up and handed over the photos he was holding, "I want to ask if Xiao Wu had any preference of using '0' and '1' to symbolize a certain code or characters?"

Shen Xiang stared at the photos for quite some time and said, "No!"

"Please think carefully, did she show any abnormal signs recently?" Xu Lan frowned and asked hoarsely.