In network communication, port numbers are used to identify different applications or services. By specifying different port numbers, data transmitted by the network can be directed to corresponding applications or services. The collection port of Anxin Venture Gateway is specified in the configuration of Anxin Venture Gateway platform, which is used to receive data collection requests and transmit the collected data. Through this port, Anxin Venture Gateway platform can communicate with data sources and collect and obtain the required data.