During the Warring States period, there were good deeds that made horses and donkeys intercourse, so a new species that resembled a donkey and was not a donkey and not a horse was born, named mule. Mules combine the running flexibility of horses with the weight-bearing endurance of donkeys and the strength of their bodies, and they are accepted for their excellent animal power for agricultural work. During the Han Dynasty, it was also common to use horses and donkeys to intercourse and raise mules for livestock.

Poetry Hall Friends 68× 68cm By Lieberthal
There are two types of mules, the male and female donkeys are called horse mules, and the male donkeys and mares are called donkey mules. Mules belong to the family Equine, are male and female, but cannot have children.
Mules can't have children, why not? When he was a child, he consulted the old man, but the reply was a legend: when Han Liu Xiu fell into distress, he hid in a field ditch, was trampled by a mule, and casually cursed a sentence of "cutting off children and grandchildren", after which the mule could not have children... This folklore is really just an inexplicable prevarication.
Secluded 68× 68cm by Kenneth Lieberthal
I was puzzled for a long time as to why mules could not give birth, but after long-term observation and reflection on the laws of species survival and reproduction, I finally understood some of the Tao. For example, poplars and locust trees are born from the wrong roots, and no one can change anyone; pigs and sheep are in the same circle, the ewe is in heat, but the boar is blind; the wolf will never rape the sheep and then eat it.
All living species in nature, small from living individuals to largest races, are an independent and complete operational circuit. The system is absolutely exclusive, and does not tolerate the forcible intervention of any object, including survival, reproduction, and the autonomy of mutation and evolution to perfect itself in order to adapt to survival, which is sacred and inviolable. If any species cannot be left alone, it will inevitably be eliminated by nature and suffer the doom of extinction.
Alpine flowing water 68cm× 68cm Lieberthal
The emergence, derivation, and evolution of any living species is a natural product of nature.
Nature is the Word.
The emergence of the mule is not a natural product of the evolution of the species, nor is it the conscious action of the two parties, the horse and the donkey, but the product of the third (human) forced by means of mischief. The so-called strong action is to act against the law.
Mules cannot give birth, of course. It has been thousands of years since humans have mated mules with horses and donkeys, and nature is still the same, and it will not issue them a birth permit.
Mingyue Spring 68× 68 cm by Kenneth Lieberthal
In recent years, humans have used lions and tigers to breed lions, tigers and tigers, which can only be a prank. Distant hybridization of the same species advances biological evolution. This is conducive to genetic merit. This is called a hybrid advantage and can improve the species. However, the use of different species for hybridization, that is the destruction of the order of life, such as the horse's somatic cell chromosome is 64, the donkey is 62, the chromosome of the mule somatic cells born of mating is 63, which is odd, can not carry out normal meiosis, can not form germ cells, so the mule can not reproduce, but only to create a sandwich species. This is true of animals, and so are plants. Those grafted with different species will not have the ability to reproduce.
Alpine flowing water (tuan fan) 40cm× 40cm Lieberne made
Human beings are frantically interfering with biological genes with so-called science, and they are not good at raising horses and donkeys, but they want to concoct all kinds of mules.
We have lost the blue sky, can't eat safe food, can't drink pure water... Do we have to self-destruct even the genes of the body?
If human beings continue to violate the tao against heaven, destroy nature, and destroy the natural attributes of life, mankind will be punished by heaven!
(Author: Lieberthal, a famous contemporary classic landscape painter.) Literature, history, philosophy, poetry, books, and paintings are all involved, especially good at landscapes. )