During this year's National Cancer Prevention and Control Promotion Week, Professor Li Gong, Director, Chief Physician, and Master's Supervisor of the Radiotherapy Department at Tsinghua Changgeng Hospital in Beijing, titled "Farewell to the 'chemotherapy era', as this treatment method has become one of the powerful 'enemies of liver cancer'," explained the treatment methods for liver cancer to everyone. Having cancer, I used a "light" to illuminate my body and the tumors disappeared. This is not a science fiction film, but reality. This treatment method is radiation therapy. Lao Li has been engaged in radiation therapy for more than thirty years, and I would like to share with you about radiation therapy. I hope to help more new and old cancer patients, as well as family and friends, overcome their doubts. Can cancer only be treated with chemotherapy? Is there no other way besides chemotherapy for malignant tumors like liver cancer? In the concept of many people, it seems that when it comes to cancer, the first treatment that most people think of is chemotherapy. In movies and TV dramas, many people undergo chemotherapy for cancer, and the first and foremost changes in character styling are from thick and beautiful hair to bald, as well as uncomfortable frailty and pain, as well as nausea and vomiting caused by wall cracks. Because of this, many people turn pale when it comes to cancer, but still believe in their hearts that once a person gets cancer, they are sentenced to death, and there is not much time left. Is that really the case? As an oncologist with over thirty years of experience, Lao Li can responsibly tell everyone that this is not the case. In China, the number of people who suffer from cancer is in the tens of millions every year, and almost everyone around them has been exposed to or heard of a certain acquaintance who has been diagnosed with cancer. Cancer has become a common disease in our daily lives, almost as frequently as hypertension, heart disease, and other common diseases, becoming more common. The reason why cancer is called "common disease" is also because with the further research on cancer and other related diseases in the world, our current diagnosis and treatment technology is also constantly improving, and various effective treatment methods are constantly being put into clinical practice. The "chemotherapy era" has gradually become the "past tense" of cancer diagnosis and treatment. In addition to surgical resection, the application of effective treatment methods such as targeted immunity has been widely applied in the field of cancer, especially in solid tumors such as liver cancer, and the effectiveness has been tested by stronger clinical data. The second is that a large number of patients, especially those with solid tumors such as liver cancer, experience poor and insensitive treatment outcomes during the chemotherapy process, as well as the serious side effects that chemotherapy brings to the body that are unbearable. Based on this, the medical community has always been exploring a "chemotherapy free" approach to the diagnosis and treatment of cancer, and radiation therapy, as an anti cancer "technical means," has also become increasingly developed and mature in the development process of tumor treatment. Why is radiotherapy the "friend of treatment" for liver cancer patients? Here, Lao Li is the first to introduce the treatment method of radiation therapy to everyone. Radiotherapy, also known as "radiation therapy". It is the treatment of malignant tumors and some benign diseases using one or more types of ionizing radiation, which "kills" the tumor. Generally speaking, radiotherapy mainly utilizes the element cobalt 60, which is produced by radiation such as radioactive isotopes α、β、γ X-rays and various types of X-rays are applied externally to the tumor tissue in the patient's body, achieving the goal of shrinking the tumor