ICBC President Gu Yan said in an interview that ICBC started research and application of blockchain technology very early. At present, ICBC has built a blockchain service system around a number of areas, including people's livelihood services, inclusive finance, the "Belt and Road" construction, and cross-border trade. For example, the Guizhou anti-poverty investment fund blockchain platform, the "ICBC e-trust" online financing financial service platform, the "China-Europe e-Single Link" and the "China-Africa e-Link Link" trade finance blockchain platform have been established, covering nearly 80 application scenarios. Of course, there are still some technical challenges in the large-scale promotion and application of blockchain technology, mainly related to the capacity and computing power of computers. Therefore, currently financial institutions mainly use blockchain technology in scenarios with special verification needs, such as supply chains, poverty alleviation funds, etc.