Learning Objective: Didi Taxi (also known as Didi Taxi) is a mobile real-time travel software, which includes taxis, private cars, Didi Express, ride-hailing, taxi and bus services. The "Didi Travel" App uses the characteristics of the mobile Internet and uses online reservations to change the traditional way taxi drivers wait for guests. From taking a taxi to getting off the taxi, using online payment methods saves time and keeping the car always available has become an effective way for people to travel.