In recent years, information technologies such as mobile payment, search engines, cloud computing and internet finance have developed rapidly. This has greatly

This is an open access book. Finance and trade are the keys to the world's continued economic and social development. Studying finance and trade can help us bet

This is an open access book. With the continuous upgrading of network information technology, especially the combination of Internet - cloud computing - blockch

This is an open access book.With the advent of economic globalization and the information technology revolution, especially the dawn of the era of network econo