Lemon cloud is located in the south zone of Yuehai Street Science and Technology Park, Nanshan District, Shenzhen, and is a subsidiary of Shenzhen Cai Yi Information Technology Co., Ltd., which was established in April 20 13. The company's general business projects include software development, technology development, information technology development and related consulting services, economic and trade consulting, enterprise management consulting, finance and taxation consulting, investment consulting (projects subject to approval according to law can only be carried out after approval by relevant departments), and sales of office supplies, daily necessities and cultural goods. The licensed business items are the retail of books, audio-visual products and electronic publications, and vocational skills training.