C140

"The most interesting thing is... The murderer may know Yin Liang better than Yin Liang. "

"He thought of Yin Liang's feedback after scaring Gao Lan, and even considered the hesitation in his thoughts."

"Then the killer's range will shrink again. He knows Gao Lan, and of course, many people, including you, know Gao Lan. But he also knows Yin Liang