On November 11th, Ant Financial Co., Ltd. CTO Lu Su said in an interview that it is a very important thing to be tampered with when valuable things become digital. Otherwise, the system is not credible, so we must Use blockchain to store these valuable things. We have tried blockchain technology in many places. For example, this year's double 11, the user bought anything on Taobao Tmall, it is not the real thing must be the consumer's most concerned things, we work hard with Taobao Tmall's classmates, has made many goods have blocks Chain certificate to ensure the authenticity of the goods. This year, many products have begun to support the scan code traceability function to help consumers understand the detailed source of the product.