diff --git a/ESP-IDF_Robot/tutorial/docs/build/simplepdf/.buildinfo b/ESP-IDF_Robot/tutorial/docs/build/simplepdf/.buildinfo
index 2596a212e..4bce1eb85 100644
--- a/ESP-IDF_Robot/tutorial/docs/build/simplepdf/.buildinfo
+++ b/ESP-IDF_Robot/tutorial/docs/build/simplepdf/.buildinfo
@@ -1,4 +1,4 @@
 # Sphinx build info version 1
 # This file records the configuration used when building these files. When it is not found, a full rebuild will be done.
-config: 68e99aaebec40afde1c4d6ea4d6cf9f8
+config: 2a5d1949c3721836c34f0b73b9434126
 tags: 62a1e7829a13fc7881b6498c52484ec0
diff --git a/ESP-IDF_Robot/tutorial/docs/build/simplepdf/esp-idf_espnow_rc-car.pdf b/ESP-IDF_Robot/tutorial/docs/build/simplepdf/esp-idf_espnow_rc-car.pdf
index 96f19af76..ed60ebb06 100644
Binary files a/ESP-IDF_Robot/tutorial/docs/build/simplepdf/esp-idf_espnow_rc-car.pdf and b/ESP-IDF_Robot/tutorial/docs/build/simplepdf/esp-idf_espnow_rc-car.pdf differ
diff --git a/ESP-IDF_Robot/tutorial/docs/build/simplepdf/index.html b/ESP-IDF_Robot/tutorial/docs/build/simplepdf/index.html
index be4435694..3f9484589 100644
--- a/ESP-IDF_Robot/tutorial/docs/build/simplepdf/index.html
+++ b/ESP-IDF_Robot/tutorial/docs/build/simplepdf/index.html
@@ -614,8 +614,8 @@ Changing PWM on each channel determines the speed and direction of the RC car.
           </a>
          </h2>
          <p>
-          The struct is used as a payload for sending control signals from transmitting device to the receiver.
-In addition, it may contain telemetry data, battery status, etc.
+          The struct serves as the data payload for sending control signals from transmitting device to the receiver using ESP-NOW.
+In addition, it may contain additional data such as telemetry, battery status, etc.
          </p>
          <p>
           The