This is an open access book.With the rapid development of modern economy and Internet technology, the traditional financial industry has to develop Internet finance to provide better services and meet the needs of the times. It is against this background that the blockchain, relying on its special advantages (collective maintenance, reliable databases, and decentralization), provides the reliability to solve the credit risk of Internet finance, has an impact on institutions, trust mechanisms, risk control, etc. in the Internet finance industry, and has derived more new application scenarios, thus paving the way for the development of finance in the Internet era. Applying blockchain technology to the financial field can promote data information sharing, improve value transmission efficiency, and enhance database security. The financial market based on the decentralized system of blockchain technology can reduce the operating costs of financial institutions, improve economic efficiency, and solve problems such as information asymmetry. The new financial business model of "blockchain+finance" is conducive to improving the Internet credit reporting system, preventing and controlling Internet financial risks, and further realizing "financial disintermediation". At present, in China's financial field, blockchain technology has been applied and innovated in supply chain finance, cross-border payment, trade finance, asset securitization and other scenarios. To promote the exchange and development of blockchain, information technology and financial experts and scholars. The 2nd International Academic Conference on Blockchain, Information Technology and Smart Finance (ICBIS 2023) will be held in Hangzhou from February 17 to 19, 2023. This conference mainly focuses on the latest research on "blockchain, information technology and smart finance". This conference brings together experts, scholars, researchers and relevant practitioners in this field from all over the world to share research results, discuss hot issues, and provide participants with cutting-edge scientific and technological information, so that you can timely understand the development trends of the industry and master the latest technologies, broaden research horizons and promote academic progress.

This is an open access book.The relationship between international trade and economic development is mutual: foreign trade is the driving force of economic growth, and higher export level means that a country has the means to improve its import level. The growth of exports also tends to change the investment fields of the countries concerned. Exports make a country gain the benefits of economies of scale, and competition in the world market will put pressure on a country's export industry, A growing export sector will also encourage domestic and foreign investment. The concept of financial development actually means that the financial structure has changed to a certain extent. This change is not only the change of time, but also the change of internal transaction flow. International trade is known as the driving force of the development of human science and technology, and has created countless employment opportunities worldwide. It is also international trade that has led to the formation of industrial division worldwide. International trade, from its name, can be seen as trade between different countries, and the financial development level of a country will have a direct impact on the trend of international trade, so the purchasing power will be stronger. In this case, more countries are willing to increase import and export trade, which can not only increase their income, but also increase the relationship between countries. The 2nd International Academic Conference on Economics, Smart Finance, and Contemporary Trade (ESFCT 2023) will be held on July 28–30, 2023 in Dali, China. The purpose of ESFCT 2023 is to explore the relationship between economy, smart finance and contemporary trade. Experts and scholars in relevant fields are welcome to participate in ESFCT 2023.

The 2nd International Conference on Bigdata Blockchain and Economy Management (ICBBEM 2023) was successfully held on 19-21 May 2023 in Hangzhou, China. The conference aims to present the latest research results in the areas related to Big Data, Blockchain and Economic Management, and provide an opportunity for experts and scholars from various fields to meet face-to-face, exchange new ideas and practical experiences, establish business or research relationships, and seek future international cooperation. This volume contains a collection of excellent papers from the conference, presented on topics such as computer software and computer applications, blockchain in data management, e-commerce and digital commerce, and linear regression analysis. We hope that these papers will serve as a reference for young scholars in their future research.

This book contains the proceedings of the 2nd International Conference on Financial Innovation, FinTech and Information Technology (FFIT 2023) held in Chongqing, China from July 7th to 9th, 2023. FFIT 2023 focuses on Economic statistics under big data, Financial risk control, Economic Modeling and Software Engineering, Accounting and Financial Information Systems, Innovative Supply Chain Financial Services and other fields. The aim of the conference is to provide a platform for experts, scholars, engineers, technicians and technical R&D personnel to share scientific research achievements and cutting-edge technologies, understand academic development trends, expand research ideas, strengthen academic research and discussion, and promote the industrialization cooperation of academic achievements. We hope that this conference will continue to be held in the coming years, making it an ideal platform for people to share views and experiences in financial innovation and economic development and related areas. We would also like to thank the invited speakers for their valuable contributions and for sharing their perspectives during their speeches.

The 2023 2nd International Conference on Information Economy, Data Modeling and Cloud Computing (ICIDC 2023) was therefore held during June 2nd to 4th, 2023 in Nanchang, China (hybrid form). The Conference was attended by more than 100 participants and hosted four keynote speeches, more than 60 oral presentations as well as various poster presentations. The proceedings of ICIDC 2023 cover various topics, including Big Data Finance, E-Commerce and Digital Business, Modeling Method, 3D Modeling, Internet of Things, Cloud Computing Platform, etc. All the papers have been checked through rigorous review and processes to meet the requirements of publication. Data modeling allows us to obtain the dynamic change trend of various indicator data, so how to use big data information to model and study the development trend of economic operation plan is of great significance. And that is exactly the purpose of this conference, focusing on the application of big data in the economic field as well as conducting more profound research in combination with cloud computing.