“…In the study of complex networks, there are regular network, random network and general network, and there also derived small-world network model [6] and BA scale-free network model [7]. Complex network theory has been applied to business economics [8], energy economics [9,10], social sciences [11,12], cross-shareholding networks [13], and other fields. Since the 1990s, many economists and sociologists have focused on international trade and social networks.…”