C87 Every Second Counts

"When did this happen?" Wang Xinran asked.

Wu Zhongyuan tried to recall, "We arrived at the hotel in the morning that day. I washed away the paper scraps in the afternoon. That dung truck also went that afternoon."

At this time, Wang Xinran calmed down, "Interval time?"

Wu Zhongyuan tried hard to recall the details. "After I washed away the paper scraps