According to Dai Ying, a second-level inspector and press spokesman of the Beijing Municipal Development and Reform Commission, version 3.0 of the Optimized Business Environment has been launched since August this year to increase reforms in terms of reducing matters, materials, and frequency. Haidian District is linked on the relevant data sharing, and the clerks no longer need to submit materials such as ID cards, marriage certificates or divorce certificates, and real estate certificates. Buyers and sellers applying online need only carry mobile phones and ID cards to complete various approvals of the transaction. . The on-site verification materials were reduced from 7 to 1 and the verification time was reduced from 15 minutes to 2 minutes. Since the system upgrade and launch on May 7, as of December 24, the number of real estate transactions supported by blockchain technology has increased to 1,576, with a daily maximum of 119 transactions.