On January 18, the concept of digital economy continued to be popular. As of 9:50, cloud computing 50ETF (516630) rose 2.61%, big data 50ETF (516000) rose 2.27%, component stocks Beijing Certificate Authority Co.Ltd(300579) rose 7%, and Navinfo Co.Ltd(002405) , Digital China Information Service Company Ltd(000555) rose more than 5%. Recently, China has frequently launched policies in related fields of digital economy. Digital economy is one of the most determined directions for the development of the 14th five year plan. The introduction of policies also provides a short-term early starting point for stable fiscal growth.