Connecting RC522 RFID reader to XBee

Hi, I’m still learning so I don’t have a lot of knowledge serial communication, etc. How do I connect the pins of the XBee and the RC522 reader? Do I just need to connect RX,TX,Ground and Voltage supply? Which pins connect to the pin of the other? I think I get the concept of the network of XBee, I just need to know how to do the end nodes. Thanks!