Yang Zhihan walks at the campus of Sichuan International Studies University in southwest China's Chongqing Municipality, Feb. 11, 2018. Yang Zhihan is a teacher of Russian language at Sichuan International Studies University. Only with a smartphone in her hand, she experienced a "seamless" home-back travel in which she ordered a taxi, paid train ticket and rented a car along the 4-hour journey from Chongqing to her hometown Chengdu. (Xinhua/Wang Quanchao)