introduction
People have sorrows and joys, the moon has clouds and sunshine, this matter is difficult to complete, "parting" is a word full of sadness, young people do not know how to say goodbye, many of them have not known, in some cases, the reunion before parting is likely to be the last time to meet. Although the sky is merciless, but people are sentient and righteous, from ancient times to the present, one of the most sad things is "white-haired people send black-haired people". People are inherently dead, and the death of the old man is still sad, let alone the energetic young people?

01
In this world, there are too many factors of accident, and people always say: "No one knows which one will come first tomorrow or the accident." "Even so, after all, we can't worry about the sky, worry about the arrival of accidents, and panic all day long." Fortunately, today's medical level is gradually improving, the health of the people has been more guaranteed, and when the disease is far away from the people, the people can live better. In ancient and modern China and abroad, countless medical people have been committed to overcoming human incurable diseases and have made outstanding contributions to the development of the medical field at home and abroad.
However, even so, there are still many difficult and complicated diseases, and to this day, human beings still have not found effective solutions. We are accustomed to calling these diseases "terminal illnesses", and when terminal illnesses come to the door, young and old, they are facing a huge crisis. In the face of the disease, some people choose to give up on themselves, and some people choose to bravely fight the disease, they fight the disease with a positive attitude, and some of them have miraculously survived.
However, the reality is cruel after all, and the hope of a terminally ill patient who wants to regain his health becomes very small. "Leukemia" is one of the incurable diseases of human beings, which makes the original living life fragile and dying. As far as contemporary medical technology is concerned, the treatment of leukemia is very difficult, not only costing huge costs, but also needing to find a matching bone marrow type, which depends on the patient's willpower and luck.
Zhang Di, who graduated from Shanghai Jiao Tong University, is a leukemia patient. The young Zhang Di was diagnosed with leukemia, originally in the youth of the age, he could have had a bright future, but because of leukemia, let him experience all kinds of torture and pain in the future, in the end, Zhang Di had to give up treatment.
What moved countless Chinese people was that Zhang Di voluntarily donated his body before his death, in order to appease the emotions of his family, especially afraid that his grandmother could not withstand the blow, Zhang Di also deliberately concealed his illness and lied to his grandmother that he was about to study abroad...
02
Zhang Di is from Shenyang, in his twenties, he has achieved success, graduated from Shanghai Jiaotong University with a master's degree, in 2018, shortly after finding a job, he was diagnosed with leukemia, this news is like a thunderbolt on a sunny day, which hit Zhang Di and his entire family hard.
However, Zhang Di quickly corrected his mentality and prepared to actively fight the disease, after all, he was still young and strong. Zhang Di is eager to return to a normal life, whether it is chemotherapy or bone piercing, he has shown great bravery. After that, Zhang Di underwent the first bone marrow matching surgery, and thought that he could be cured, but unfortunately, only a year later, the disease returned again.
This time, the doctor conducted a comprehensive analysis of Zhang Di's condition, because the condition is a second recurrence, the possibility of Zhang Di being cured is greatly reduced, and even if he is cured, he has to lie in the hospital bed all day long, and the bone marrow pairing will repel in his body, resulting in skin ulceration and other symptoms... In addition, Zhang Di's family is not rich, the first treatment has put the family under great financial pressure, this unfortunate family, it is difficult to bear such a high cost of treatment.
Zhang's father and mother worked day and night for their son's illness, and there was no smile on their faces. After Zhang Di suffered from leukemia, in order to keep the last thoughts, Zhang Di and his parents and family of three have taken photos many times, although Zhang Di tried his best to hide the sadness in his heart and show people with laughter, but the parents around him were already full of sadness, and their brows were full of unconcealable grief.
In addition to his parents, Zhang Di can't put down his grandmother. During his childhood, Zhang Dido was accompanied and cared for by his grandmother. Now that Grandma is older, he decided to tell a lie in order not to let her suffer the blow of "white haired people sending black haired people".
In this way, Zhang Di always concealed his illness from his grandmother, saying that he was about to go abroad and it was inconvenient to contact his grandmother. Not only that, Zhang Di also signed an agreement on the donation of the remains, voluntarily donating the remains to the state, hoping to create more value in this way.
At this time, he had just turned 29.
epilogue
"White-haired people send black-haired people", Zhang Di's behavior has made countless people feel sad, and also made countless people moved. In life, we should always cherish time, cherish the people and things around us, there is a saying that we should all live every day as the last day of life. In this ordinary day, we should cherish the time and look for happiness and happiness.