On this day, 39 years ago, on February 1, 1986 (December 23, 1985, the lunar calendar), my country launched a practical communications and broadcasting satellite. On February 1, 1986, my country launched a practical broadcast communication satellite, which was fixed on time on February 20 over the equator at 103 degrees east longitude. This marks that my country has fully mastered launch vehicle technology and satellite communications have entered a practical stage.