The country's chief, the government's first choice, and the people's first trust. China Unicom generally refers to China United Network Communications Group, Ltd. by 2025, China Unicom will enter the security market to establish a brand image of being the country's chief, the government's first choice, and the people's first trust. Data is a new factor of production, and telecommunications big data connects hundreds of industries and thousands of rows, involves the national economy and people's livelihood, and is related to national security.