Reverse talent flow: Refers to the phenomenon of professionals who originally worked in well-known big cities and chose to work in small and medium cities. Which of the following is the counter flow of talent? ["The county of Xiao Zhao's hometown has experienced rapid economic development in recent years. He is hiring professionals with a working background in a large city. After repeated consideration, Xiao Zhao resigned from a research department in Beijing and returned to his hometown to apply successfully.", 'Xiao Han, who has graduated from high school, has worked hard in Shenzhen for many years. I deeply feel that although there are many job opportunities and considerable annual income, but the pressure of competition is too great, sometimes it can not help. After the Spring Festival, he decided to stay in his hometown to start a business.', "Xiao Huang obtained a master's degree in bridge design from a university in Tianjin and came to the small city where his girlfriend is located to find a good job. He and his girlfriend are very happy.", 'er D.80, white-collar Xiao Li served at the headquarters of a financial institution in Shanghai. A few days ago, she decided to change jobs to a nearby insurance company.']