diff --git a/docs/assets/img/product_pics/unit/4_relay/4relay.webp b/docs/assets/img/product_pics/unit/4_relay/4relay.webp
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Binary files a/docs/assets/img/product_pics/unit/4_relay/4relay.webp and b/docs/assets/img/product_pics/unit/4_relay/4relay.webp differ
diff --git a/docs/en/core/m5paper.md b/docs/en/core/m5paper.md
new file mode 100644
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diff --git a/docs/en/uiflow/advanced.md b/docs/en/uiflow/advanced.md
index 8f24c8d0..c5eb4124 100644
--- a/docs/en/uiflow/advanced.md
+++ b/docs/en/uiflow/advanced.md
@@ -111,6 +111,7 @@ __Note: The created variable name is not allowed to be consistent with the param
>Complete the program editing, respectively run the receiver and transmitter programs, you can achieve ESP-NOW short-range wireless communication.
+?>Note: When using ESP-NOW, you need to download the program to the device instead of directly testing and running.
## MQTT communication
diff --git a/docs/en/unit/4relay.md b/docs/en/unit/4relay.md
index 9c477242..3234c55b 100644
--- a/docs/en/unit/4relay.md
+++ b/docs/en/unit/4relay.md
@@ -19,6 +19,7 @@
- 1x 4-Relay Unit
- 1x Grove Cable(20cm)
+- 4x VH-3.96-4P Plug terminal
## Applications
@@ -80,7 +81,7 @@