Bai Xiaofei, 26 years old today, is a php programmer. He works for a network company. Today, on behalf of the company, he came to attend a science and Technology Expo in Zhonghai city. His main duty is to introduce the functions of a technology software of his company. However, after a morning rush, he happened to see a familiar face during the lunch break, but he was not sure for a moment, because the person was in M country, and he had only seen her photo once.