Veterans never die and are handed down from generation to generation. The source of the word "Zhuangzi, Master of Health": "It means that the salary is poor, and the fire spreads and you are at a loss." The original wood has been burned out, and the fire can still be passed on.
In ancient times, it was a metaphor that bones were exhausted and the spirit was immortal; Later generations use it to describe the knowledge and skills passed down from generation to generation. The firewood in front has just been burned, and then-the firewood has been burned, and the fire will never go out. It is a metaphor for teachers and students to teach and learn from each other from generation to generation.
Introduction of allusions
In ancient times, because kindling was very difficult to obtain, the ancients cherished kindling very much. The tribe sent a special guard to add firewood to the fire from time to time to prevent it from going out. In ancient times, lighting, heating and cooking all depended on burning wood. In ancient times, firewood was called "salary". When the wage is ignited, its own combustion is endless, but the previous firewood is burned out and the latter firewood is burned again, and the fire is endless. This is called "handed down from generation to generation".
There was a national player named Wang in the Tang Dynasty. "Accumulated salary" means collecting firewood. Legend has it that once he stayed in the mountains. In the middle of the night, I heard the shopkeeper, old woman and daughter-in-law dictating and playing chess in the dark. The chess is very subtle. Wang secretly wrote down the chess score, feeling much higher than his own level. In the morning, both mother-in-law and daughter-in-law disappeared, and Wang realized that they were immortals. This chess score was later called the immortal score. Later, candles were invented, and the continuation of this civilization is also called "crossing the street lamp".