In a large Zigbee network (1000 nodes), the number of nodes in a Zigbee network cannot be too large due to chip limitations. However, in some practical scenarios, more Zigbee nodes are needed, so multiple Zigbee coordinators need to be set up to establish multiple Zigbee networks. Finally, is it possible for one node to collect all the information and upload it to a PC in Zigbee? How can this be achieved?