"Zhang Su?" Gu Xingfeng called.
"I am, chief Gu." Zhang Su answered through Liu Xi's phone. "How is my elder brother?" he asked.
Gu Xingfeng froze. "… he was stabbed." He answered. "He's in a critical condition. I'm sorry." He told him.
"It's fine. My elder brother is strong, or else he won't be a policeman." Zhang Su said. "The reason why I had spoken just now after all the years is because Shang Mi's father have me and my elder brother his wealth so we can live." He explained. "Ten years of my silence is my gratitude to him." He said.
"How about the Tsuting University students?" Gu Xingfeng asked. "And Huo Ling?" he added.
"I don't know why he killed Huo Ling. But, I know Lu Ming." Zhang Su said. "Lu Ming is sitting across me and had his earphones on. However, he clearly saw those people dragged Shang Mi away to the back of the train." He explained. "Maybe Lu Ming doesn't remember this." He added.
"Thank you." Gu Xingfeng said.