Odaily Planet Daily News: Beijing Directory Chain 2.0 was launched at 0:00 on January 1. Currently, the city-level data directories of more than 80 departments in Beijing, the district-level data directories of 16 districts and economic and technological development zones, and the data directories of more than 10 social institutions in the fields of people's livelihood and finance are all on the "chain". This is the first blockchain infrastructure for a super-large city in my country. (Xinhua News Agency)