Compared with KFC, McDonald's has more kinds of hamburgers and desserts, which are more like traditional "foreign fast food" and have higher prices, but also have their own unique tastes to attract consumers. Regarding the definition of junk food, I don't think McDonald's and KFC are junk food, and frying is a cooking method, but it can't be said that frying is unhealthy, and eating only fried food is unhealthy. Similarly, eating only vegetables is unhealthy, and only a reasonable diet is a healthy diet.

Although KFC and McDonald's are often called "foreign fast food", they are also different. KFC has more varieties and has introduced many meals that meet the tastes of China people. The price is relatively low, and there are many stores. The main reason for the slow ordering is that there are many customers, and restaurants with many customers are more attractive to consumers (although everyone knows the taste of KFC).

KFC and McDonald's provide breakfast, lunch and dinner, and there is food everywhere. Because of the semi-finished processing and heating services provided by KFC and McDonald's, breakfast, lunch and dinner can be provided quickly. Free opening is a marketing strategy for KFC and McDonald's to attract popularity. It turns out that KFC and McDonald's are both in popular business districts, with a large flow of people. If we provide places where we can sit for hours whether we order or not, the popularity and flow of people will certainly be strong.

The dining environment is good. Generally, KFC and McDonald's are bright, clean and tidy, giving people a very comfortable feeling. People want to eat in a comfortable environment. Although the environment of other high-end restaurants is not worse than KFC McDonald's, their business hours are not long. There are also some restaurants that make people feel unsanitary, which are related to food and eating. People still value the dining environment. (2) Fast food Generally, the food provided by KFC and McDonald's takes 2-5 minutes from ordering to taking the meal, which is no more than 10 minute, meeting the needs of fast life. KFC and McDonald's can provide food efficiently because they only provide semi-finished products processing and heating services in KFC and McDonald's stores, so the speed is very fast.