(1. Preparatory knowledge 2. Demand analysis of "Jiubao Restaurant WeChat ordering system" 3. Functional design of "Jiubao Restaurant WeChat ordering system" 4. Data framework design of "Jiubao Restaurant WeChat ordering system" 5. Program design of "Jiubao Restaurant WeChat ordering system" 6. PC end program development of "Jiubao Restaurant WeChat ordering system" 7. WeChat end program development of "Jiubao Restaurant WeChat ordering system" 8. "Jiubao Restaurant WeChat ordering system" The summary of this data includes the following annexes:)