"Huh…?" Huo Ling muttered as Yi Bing pushed his wheelchair around the school's grounds. "Hai Ba is 8888, right?" he asked.
Yi Bing nodded. "Yes." He answered.
"And Sha Jiu is 9999…" Huo Ling continued. "I mean, the former 9999… but, there is a thousand difference between them?" he said.
"That's because the time flows differently between the worlds because of the unstable space." Yi Bing answered. "Hai Ba might have died three years before Sha Jiu died in their world. But, their world might be a hundred, or a thousand, years behind from our world." He explained.
"Oh." Huo Ling muttered. Then, he looked around. "By the way, don't I have any classes today?" he asked.
"You've just gotten into an accident, and you want to attend class the same day?" Yi Bing asked back.