Animals are a big category in the biological world. Generally, inorganic substances cannot synthesize organic substances, and only organic substances (plants, animals or microorganisms) can be used as food, so it has different morphological structure and physiological functions from plants to carry out life activities such as feeding, digestion, absorption, breathing, circulation, excretion, feeling, exercise and reproduction.

Dapeng spread its wings refers to Dapeng bird, the largest bird in China's myths and legends, and a strange bird in many legends of the world, made of Kun. China's word "Peng" is based on the ancient book Shuowen, that is, the ancient word "Feng". Shuowen said, "Phoenix flies and there are tens of thousands of birds, so friends are regarded as cronies." It can be seen that Peng on the left comes from its status as the king of birds.

The specific origin of Dapeng bird

Legend has it that Dapeng bird was changed from ambitious Kun. Kun spent all day admiring the boundless sea in the south. He wants to live in the real sea and enjoy life freely. He knows that when it rains cats and dogs, the water vapor in the sky and the water vapor on the sea will be very strong.

At this time, if the sacred Kun Can jumps over the height of nine feet, it can take advantage of the moment when two streams of water and gas blend and soar above Dapeng. At that moment, it can break away from the limit of gravity, exceed nine feet, and then fly and grow wings to become a flying fish. In a flash, it turned into a big, big wing, turned into a Dapeng, rushed to the sky, and launched its yearning road. This is a legendary story of Dapeng.

This Kun is ready. It has been waiting for a long time. Finally, one day, the sea began to rain cats and dogs, and very strong water vapor could convection. At the moment when the weather and atmosphere were very strong, it did not hesitate to sprint and pounce. It is going to fly to Nanming while using the qi of heaven and earth.

However, Kun had to jump nine feet at a time to get rid of the gravity of the earth. It may have passed the height of six feet in the first sprint, but it is still not out of gravity. Now it will fall back to the sea heavily, but it will not be discouraged.

Sprint up again and again, although it was thrown back into the sea again and again, but for the last time, it jumped up nine feet with all its strength, successfully broke away from the restrictions of the earth and gas, instantly became a flying fish, and then changed from a rib to a pair of huge wings. At this time, it began to have the capital to fly to Nanming, that is, wings, to expand its Pengcheng Wan Li.

Here, Zhuangzi used Kun as a metaphor for all sentient beings with noble Buddha nature, and Bei Ming as a metaphor for all sentient beings limited by luck. As far as our present field is concerned, it seems to be quite comfortable. In fact, there are too many necessities to be old and grow up. Dapeng is a metaphor for those who are wise, those who are ambitious, and think of it to pursue the virtuous and seek the immortal.