There were two main ways of saying that. First of all, from a hygiene point of view, the back of the hand is usually exposed to the environment and may come into contact with various bacteria or viruses. If the back of his hand came into direct contact with the ingredients, it might cause the ingredients to be contaminated. Secondly, from a etiquette point of view, in many cultures, it was considered impolite to put your fingers out with the back of your hand facing up. Such behavior may be seen as disrespectful or lacking in upbringing. Therefore, it was recommended to use tools such as chopsticks or forks to pick up the dishes instead of using your fingers directly. Using tools to pick up food could ensure hygiene and make it easier to control the amount and shape of the ingredients. If you need to use your hands, it is recommended to wash your hands first and keep them dry to ensure the hygiene and taste of the ingredients. At the same time, he also had to be careful not to let the back of his hand extend his fingers to pick up the food, so as not to create an unsanitary impression.

There were many pronunciations for picking up vegetables. The pronunciation for picking up vegetables was "jiā cài".
The pronunciation of picking up vegetables could be jiācāi or jiāncāi.
The downside of picking up food was the risk of disease transmission. If a carrier used his own chopsticks to pick up food for others, the saliva on the chopsticks would transmit the bacteria along with the food to others, causing others to contract diseases. Some common diseases, such as helicobiliary bacteria, hepatectomy A, hepatectomy B, hepatectomy E, etc., could be cross-infected and transmitted through the act of picking up food. In addition, using personal chopsticks to pick up dishes could also cause contamination of the dishes, increasing the risk of illness from the mouth. Therefore, in order to prevent the spread of the disease, it is recommended to use public chopsticks or separate meals to avoid the behavior of individual chopsticks picking up food.
The dialect of the dish includes Suzhou dialect, Sichuan dialect, Jiaodong dialect and Beijing dialect. In Zhuanghe dialect, Jiacai was called "", in Shanghai dialect it was called "Cai", in Shanxi dialect it was called "Cai", in Henan dialect it was called "Dao Cai", and in Beijing dialect it was called "Jian Cai". In addition, in the dialect of Hubei and Hubei, it was also called "niancai". Different regions and dialect had different names for the food.
Picking up food was a word. Picking up dishes meant using chopsticks to pick up dishes. In document 1, picking up food was described as a tool for picking things up with chopsticks. Both document 2 and document 5 mentioned that picking up food meant using chopsticks to pick up food. Therefore, picking up food was a word.
Picking up food meant using chopsticks or other tools to pick up food to eat. At the dining table, picking up food was a common behavior to show friendliness and concern. A boy picking up food for a girl could be seen as an ambiguous behavior, expressing his love and concern for a girl. However, the meaning of picking up food may be different in different cultures and situations.
The transparent picking hand in the cartoon might be a visual cue to represent something symbolic or to draw attention. It could also be a creative choice by the animators to make the scene more visually interesting and stand out.
There were some rules for picking up food. First of all, he had to be careful when picking up food. He had to decide the amount of food he picked up according to his appetite. He could not pick up too much and waste it. Secondly, he had to be civilized when picking up food. He had to wait until the food was in front of him before he picked up his chopsticks. He should not snatch the food before his neighbor. When you pick up food, you must chew it carefully and swallow it slowly. Don't wolf it down, which will leave a greedy impression. In addition, when picking up the dishes, be careful not to turn over the dishes. Don't toss and turn in the dishes, pick and choose. This is impolite behavior. Also, when picking up food, you should avoid licking or biting the chopsticks, because China has a "shared meal system", which will affect the meal of others. In addition, when picking up food, you should learn to share and think of others. Don't just focus on your favorite dishes. In general, when picking up food, one should pay attention to propriety, be civilized, chew slowly, avoid turning vegetables, licking chopsticks, biting chopsticks, and learn to share.
Jiacai was a saying in Suzhou dialect, Sichuan dialect, Jiaodong dialect, and Beijing dialect.