Chen Siping gradually adapted to the current life, the work at school was trivial and inefficient, and his mother's illness was good and bad, and he had to face it every day, and there was no way to escape, and he was a little insensitive.

The last book Chen Siping read before and after the start of school was "The Naked Ape", which was not thick, very old, read intermittently, and stumbled. On the last page, my father left an irrelevant note.

"It's often hard to understand why it's important for parents and children, and even couples, to maintain proper distance and politeness, as a sign of mutual respect, and unfortunately in many cultures, this is often overlooked. Schopenhauer said: 'On a cold winter day, in order to avoid freezing, a herd of porcupines hugged each other to keep warm. But they were soon pricked by each other's hard stingers. In this way, they are forced to separate. But for warmth, their bodies approached again, and the hard thorns on their bodies pricked them again. These porcupines are tormented by both pains until they finally find a distance that is just enough to tolerate each other. Therefore, the social needs that arise due to the inner emptiness and monotony of people drive people together. But many of the disgusting qualities and intolerable shortcomings of each of them divide the people again. The last thing people find is the right distance to be able to stay together and tolerate each other, and that is polite and courteous. If that is not enough, read Schopenhauer's mother's letter to her son: 'I always tell you that it is difficult to live with you, and that the more I understand you, the more painful I feel.' I'm not going to hide this from you: as long as I don't live with you, I can sacrifice anything. I'm not ignoring the good in you, and the things that daunt me are not in your heart, in your inner side, but in your character, in your external side, in your judgment, in your habits. In a word, I can't agree with you when it comes to the external world...... Every time you come to see me, it's just a few days together, but there are always some needless and fierce arguments. Therefore, it is only after you are gone that I feel relieved, because when you are there, your complaints about the inevitable, your gloomy expression, your strange judgments, as if you were prophesying, and no one else can say anything against it, all this makes me feel depressed...... Listen, I want our relationship to be based on the fact that you are in your house and you are my guest in my place...... You may have supper at my place on the days of my guests' gatherings, if you don't eat without nasty arguments to be unpleasant. Your lamentation for this stupid world and the misfortunes of mankind has always kept me awake and nightmares, and I like to sleep well. I don't think Schopenhauer's mother was too harsh, but rather Schopenhauer was his 'porcupine with a hard thorn,' and he obviously didn't want to admit it. After that, Schopenhauer never saw his mother again, and he remained unmarried for life. ”

Chen Siping read it over and over again, and he didn't know what these words had to do with the "naked ape". After that, he was busy with work and life, and he didn't read for a while, and he was even a little afraid to open the books left by his father, afraid that he would be influenced by his father and leave his mother and run away from home. What will happen to the mother if he is gone? He felt like a caterpillar in a cocoon – according to what he had read, it was an extremely cruel process that was not inspiring.

"The changes in the internal organs of holometamorphic insects are mainly carried out in the pupal stage. The changes mainly include histolysis of larvae and histogenesis of adults, which are connected with each other and gradually replaced. The degree of change in internal organs varies with species and organs, and the degree of tissue dissociation is smaller in lower holomorphic insects, while the degree of tissue dissociation is greater in higher insects, especially in hymenoptera and diptera. Among all kinds of organs, most of the structures that play a major role in life, such as the dorsal blood vessels, central nervous system and tracheal system, are often directly involved in the formation of the corresponding structures of the adult worm without tissue dissociation and complete destruction. Layers such as cortical cells, digestive organs, and some muscles and glands often need to be re-formed. Organs and tissues that need to be changed or reformed are the same as external organs, and their organ buds already exist in the larvae, but these organ buds are only a bunch of cells on each corresponding part, and their division and differentiation form the adult organs. The dissociation of tissues is mainly carried out by phagocytosis and autolysis (autolysis) by phagocytic cells, and most of the substances dissolved in the blood after dissociation become nutrients for the formation of new organs and tissues. ”

In other words, the caterpillar is just a tool that provides nutrients for the adult, and the caterpillar is not so much the "larvae" of the butterfly as the "past life" of the butterfly.

On the afternoon of this day, Chen Siping came back from the hospital, and the autumn tiger was in charge, and the cicadas were noisy, making people uneasy. He had a greasy face, bought a bottle of iced Coke from a roadside shop, and drank it slowly while standing in the shade of a tree, looking at the pedestrians in the streets and alleys, listless, like wilting crops.

He heard someone screaming, and turned his head to see a man with gray sideburns, standing a few steps away looking at him. Chen Siping felt a little familiar, but he couldn't remember who the other party was, so he hesitated for a few seconds, and the other party introduced himself, saying that it was his uncle Ding Zhengxin.

Chen Siping remembered that his mother's surname was Ding, and he had a younger brother who was six or seven years younger, and he quarreled over real estate several years ago, so that he broke off the relationship and never got along. He was a little embarrassed, and he called his uncle without embarrassment, not knowing what to say.

Ding Zhengxin has no prejudice against this nephew, and he has also heard about his brother-in-law running away from home. He casually asked about his sister's recent situation, Chen Siping touched his heart, a wry smile appeared on his face, and he couldn't help but sigh a few bitter words. Ding Zhengxin sighed, and asked about his nephew's work, and learned that he was a temporary worker in Songjiang Middle School, taking care of audio-visual equipment, and couldn't help but feel compassion and asked him if he had ever thought about changing jobs.

Alzheimer's disease cannot be cured, and treatment can delay the progression of the disease at most, which is a heavy burden for Chen Siping. The nephew didn't leave his uncle's house, breaking the bones and connecting the tendons, Chen Siping readily agreed.