On the evening of March 7, 2014, Steve Wang turned on his smartphone and found a voice message from his mother, who was vacationing in Nepal. “I’ll be landing in Beijing at around 6:30 tomorrow morning,” she told him. “Please come and get me. And bring a coat. I don’t have one with me.”
Wang was tired, so he asked his father if he would pick her up. Then he went to bed.