Arduino + Xbee + Sensor Communicate to Xbee + PC Problem

Using Arduino Networking, Protocols, and Devices
11

Now I rewrite the program of Sensor Side and remove the Xbee Shield,
just connect the following wire
Xbee <----> Arduino
Vin 3.3V
Dout RX0
Din TX0
GND GND

with following Code

    #include <OneWire.h>
    #include <DallasTemperature.h>
    #include <SoftwareSerial.h>

    SoftwareSerial mySerial(0, 1); 

    #define ONE_WIRE_BUS 2
    
    OneWire oneWire(ONE_WIRE_BUS);
     
    DallasTemperature sensors(&oneWire);
     
    void setup(void)
    {
      Serial.begin(57600);
      sensors.begin();
    }
     
    void loop(void)
    {
      sensors.requestTemperatures();
      int tempA = sensors.getTempCByIndex(0);
      Serial.print(tempA);
      Serial.println();
      delay (2000);
    }

Also i reconfigure the Xbee
Coordinate End Device
CH = 11 CH = 11
ID =AAAA ID = AAAA
DH = 13A200 DH=13A200
DL=4081B858 DL = 4081B859
MY=0 MY=0
SH=13A200 SH= 13A200
SL=4081B859 SL= 4081B858
CE=1 CE=0
BD=6(57600) BD=6(57600)

Now, i can receive the temp from Sensor Side and show in X-CTU
(Please find the attachment)

i would like to improve my project,
i have 2 Arduino , 2 Xbee
if the sensor part arudino remain unchange,
the PC side change to a Arduino + Xbee
with the following code

#include <SoftwareSerial.h>

SoftwareSerial mySerial(0, 1); // RX, TX

void setup()  
{
 // Open serial communications and wait for port to open:
  Serial.begin(57600);  
  Serial.println("Test");
  mySerial.begin(57600);
}

void loop() // run over and over
{
  mySerial.listen();
  if (mySerial.available()>0)
  {
Serial.println(mySerial.available());
delay(500);
  }
}

I cant receive the temp at serial monitor
and just deplay the "Test"
and 5,5,5,5,10,10,10,,15,15.....63
((Please find the attachment)
how can i receive the temp
because i would like to use the temp to trigger the fan if the temperature too high

Serial Monitor.bmp (1.76 MB)

Temp with AT mode.bmp (694 KB)