diff --git a/docs/smartcity/case01.md b/docs/smartcity/case01.md
index 3b090ce7..eb230f64 100644
--- a/docs/smartcity/case01.md
+++ b/docs/smartcity/case01.md
@@ -47,6 +47,8 @@ Connect LED light to the P3 port of Smarthon IoT:bit<BR><P>
 <BR>![auto_fit](images/Case1/Case1_hardware.png)
 <P>
 
+*Pull the buzzer switch 'up' to disconnect the buzzer in this execrise*
+
 ## Programming (MakeCode)
 <HR>
 
diff --git a/docs/smartcity/case02.md b/docs/smartcity/case02.md
index 5d900466..4ce0b92f 100644
--- a/docs/smartcity/case02.md
+++ b/docs/smartcity/case02.md
@@ -50,6 +50,7 @@ Connect Light Sensor to P0 port of IoT:bit<BR><P>
 Connect 180° Servo to P2 port of IoT:bit<BR><P>
 ![auto_fit](images/Case2/Case2_hardware.png)<P>
 
+*Pull the buzzer switch 'up' to disconnect the buzzer in this execrise*
 ## Programming (MakeCode)
 <HR>
 
diff --git a/docs/smartcity/case06.md b/docs/smartcity/case06.md
index 026e0963..fa115137 100644
--- a/docs/smartcity/case06.md
+++ b/docs/smartcity/case06.md
@@ -46,6 +46,7 @@ Connect the Raindrop Sensor to P0 port of IoT:bit<BR><P>
 Connect the Temperature and humidity Sensor to P2 port of IoT:bit<BR><P>
 ![auto_fit](images/Case6/Case6_hardware.png)<P>
 
+*Pull the buzzer switch 'up' to disconnect the buzzer in this execrise*
 
 ## IoT (ThingSpeak)
 <HR>
diff --git a/docs/smartcity/case07.md b/docs/smartcity/case07.md
index 5c806d0d..421ff844 100644
--- a/docs/smartcity/case07.md
+++ b/docs/smartcity/case07.md
@@ -44,6 +44,7 @@ Connect the Motion Sensor to P1 port of IoT:bit<BR><P>
 Turn on the Buzzer Switch on P0 port of IoT:bit<BR><P>
 ![auto_fit](images/Case7/Case7_hardware.png)<P>
 
+*Pull the buzzer switch <B>'down'</B> to connect the buzzer in this execrise*
 ## IoT (IFTTT)
 <HR>
 
diff --git a/docs/smartcity/case08.md b/docs/smartcity/case08.md
index a5eee2d0..19925e6e 100644
--- a/docs/smartcity/case08.md
+++ b/docs/smartcity/case08.md
@@ -40,6 +40,7 @@ N/A
 Connect the Light Sensor to P0 port of IoT:bit<BR><P>
 ![auto_fit](images/Case8/Case8a_hardware.png)<P>
 
+*Pull the buzzer switch 'up' to disconnect the buzzer in this execrise*
 
 ### Programming (MakeCode)
 <HR>
diff --git a/docs/smartcity/case10.md b/docs/smartcity/case10.md
index 27dab00b..4ef863aa 100644
--- a/docs/smartcity/case10.md
+++ b/docs/smartcity/case10.md
@@ -37,9 +37,11 @@ Assembly completed!<BR><P>
 ## Hardware connect
 <HR>
 
-Connect the white LED Light to P1 port of IoT:bit<BR><P>
+Connect the white LED Light to P0 port of IoT:bit<BR><P>
 ![auto_fit](images/Case10/Case10_hardware.png)<P>
 
+*Pull the buzzer switch 'up' to disconnect the buzzer in this execrise*
+
 ## Programming (MakeCode)
 <HR>
 
@@ -65,16 +67,22 @@ Connect the white LED Light to P1 port of IoT:bit<BR><P>
 <span id="subtitle">Step 4. Turn on/off LED by WAN command</span><BR><P>
 * Snap `if-condition`
 * Set variable `WAN_Command` = `lighton` into `if-condition`
-* `turn White LED …` from `SmartCity` > `Output`, turn white LED with intensity: 1023 at P1
+* `turn White LED …` from `SmartCity` > `Output`, turn white LED with intensity: 1023 at P0
 * Set variable `WAN_Command` = `lightoff` into `else-if-condition` 
-* Snap `turn White LED …` from `SmartCity` > `Output`, turn white LED with intensity: 0 at P1
+* Snap `turn White LED …` from `SmartCity` > `Output`, turn white LED with intensity: 0 at P0
 ![auto_fit](images/Case10/Case10_p4.png)<P>
 
 
 <span id="subtitle">Full Solution<BR><P>
+<<<<<<< HEAD
+MakeCode: [https://makecode.microbit.org/_6DuRvwD5PYpU](https://makecode.microbit.org/_6DuRvwD5PYpU)<BR><P>
+You could also download the program from the following website:<BR>
+<iframe src="https://makecode.microbit.org/#pub:_6DuRvwD5PYpU" width="100%" height="500" frameborder="0"></iframe>
+=======
 MakeCode: [https://makecode.microbit.org/_2cRf6LWq69AL](https://makecode.microbit.org/_2cRf6LWq69AL)<BR><P>
 You could also download the program from the following website:<BR>
 <iframe src="https://makecode.microbit.org/#pub:_2cRf6LWq69AL" width="100%" height="500" frameborder="0"></iframe>
+>>>>>>> f16ca1229b020beb4e91d7e16791193a6cb0c679
 
 
 ## IoT (IFTTT)
diff --git a/docs/smartcity/images/Case1/Case1_hardware.png b/docs/smartcity/images/Case1/Case1_hardware.png
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index 3ac0793e..db344e04 100644
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index b2fbe3cd..800fdacd 100644
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