Twenty-six years ago today, on December 1, 1999 (October 24, 1999 in the lunar calendar), scientists completely deciphered the 22nd pair of human chromosome genetic codes. On December 1, 1999, the joint research team of the Human Genome Project, composed of 216 scientists from Britain, the United States, Japan and China, officially announced that they had completely deciphered the genetic code of the 22nd pair of human chromosomes and determined the exact location of the 33.4 million base pairs contained in all protein-coding genes on the pair of chromosomes. This is the first time that human beings have completed the determination of the complete sequence of human chromosomal genes. Scientists generally believe that this is another breakthrough for mankind in the field of science. There are 23 pairs of chromosomes in the human body, and the 22nd chromosome is the second smallest pair. Studies have shown that it is related to the immune system, congenital heart disease, schizophrenia, unresponsive and leukemia, as well as a variety of cancers. COMMENTARY: A BIG BREAKHOUT IN GENETICS AND MEDICINE!