Today, 27 years ago, on September 8, 1998 (Lunar Calendar, July 18, 1998), China developed a full-digital high-definition television system. On September 8, 1998, China developed a full-digital high-definition television system. It is a digital transmission system from broadcast to digital video, digital audio, data and interactive business, marking that China has systematically mastered the high technology of this international competition and laid the technological foundation for China's television industry to upgrade.