2. Light food and simple meals are a form of catering. Light not only refers to the weight of ingredients, but also refers to the simple cooking method of ingredients, which retains the original nutrition and taste of ingredients.

3. The word "light food" is directly interpreted according to its meaning, which refers to food with a small amount. Broadly speaking, porridge, steamed stuffed bun, jiaozi, spring rolls, steamed stuffed bun, fruit, cakes, biscuits and other snacks and snacks can be regarded as a kind of light food, so "tea" of Cantonese in China and "afternoon tea" of Europeans can be enjoyed during non-dinner time.