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diff --git a/docs/en/base/btc_base.md b/docs/en/base/btc_base.md
index 12df7a5a..be2a49ac 100644
--- a/docs/en/base/btc_base.md
+++ b/docs/en/base/btc_base.md
@@ -2,7 +2,7 @@



+
## Specification
diff --git a/docs/en/uiflow/advanced.md b/docs/en/uiflow/advanced.md
index c5eb4124..85fd0721 100644
--- a/docs/en/uiflow/advanced.md
+++ b/docs/en/uiflow/advanced.md
@@ -111,7 +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.
+?>Note: When running ESP-NOW, if the communication devices are connected to the same WiFi network, there is no need to configure the communication channel, and the communication can be normal. Otherwise, please configure the communication channel in the program and download the program to the device for runinng.
## MQTT communication
diff --git a/docs/en/unit/env.md b/docs/en/unit/env.md
index a5cda398..4daac31a 100644
--- a/docs/en/unit/env.md
+++ b/docs/en/unit/env.md
@@ -2,7 +2,7 @@






























+
## 规格参数
diff --git a/docs/zh_CN/core/coreink.md b/docs/zh_CN/core/coreink.md
index 610516f3..1aeaa8e3 100644
--- a/docs/zh_CN/core/coreink.md
+++ b/docs/zh_CN/core/coreink.md
@@ -103,7 +103,7 @@
案例描述:
-查看信号强度,注册入网,模块拨码开关位置5/13 ON
+统计心率,显示心电图曲线
@@ -110,8 +107,9 @@ ADI集成前端| M5Stack | TX(GPIO0/13/17) | RX(GPIO5/15/16) | 5V | GND |
| COM.NB-IoT | RX | TX | VIN | GND |
| ECG | RX | TX | VIN | GND |