diff --git a/docs/_build/doctrees/environment.pickle b/docs/_build/doctrees/environment.pickle
index 4b12e8fe..e6e617d1 100644
Binary files a/docs/_build/doctrees/environment.pickle and b/docs/_build/doctrees/environment.pickle differ
diff --git a/docs/_build/doctrees/smartcity/case01.doctree b/docs/_build/doctrees/smartcity/case01.doctree
index 1a563339..24dcef9b 100644
Binary files a/docs/_build/doctrees/smartcity/case01.doctree and b/docs/_build/doctrees/smartcity/case01.doctree differ
diff --git a/docs/_build/doctrees/smartcity/chapter1.doctree b/docs/_build/doctrees/smartcity/chapter1.doctree
index 154bc6be..0bdf55df 100644
Binary files a/docs/_build/doctrees/smartcity/chapter1.doctree and b/docs/_build/doctrees/smartcity/chapter1.doctree differ
diff --git a/docs/_build/html/_sources/smartcity/case01.md.txt b/docs/_build/html/_sources/smartcity/case01.md.txt
index 1c977153..fb41308d 100644
--- a/docs/_build/html/_sources/smartcity/case01.md.txt
+++ b/docs/_build/html/_sources/smartcity/case01.md.txt
@@ -81,7 +81,7 @@ Else, turn white LED to 0 at P1 as turing off white LED.<P>
 ![auto_fit](images/Case1_08.png)<P>
 
 <span id="subtitle">Full Solution<BR><P>
-MakeCode:[https://makecode.microbit.org/_M75EdA7XVUHW](https://makecode.microbit.org/v2/#pub:_M75EdA7XVUHW)<BR><P>
+MakeCode: [https://makecode.microbit.org/_M75EdA7XVUHW](https://makecode.microbit.org/v2/#pub:_M75EdA7XVUHW)<BR><P>
 You could also download the program from the following website:<BR>
 <iframe src="https://makecode.microbit.org/v2/#pub:_M75EdA7XVUHW" width="100%" height="500" frameborder="0"></iframe>
 
diff --git a/docs/_build/html/_sources/smartcity/chapter1.md.txt b/docs/_build/html/_sources/smartcity/chapter1.md.txt
index a8784a21..f916555e 100644
--- a/docs/_build/html/_sources/smartcity/chapter1.md.txt
+++ b/docs/_build/html/_sources/smartcity/chapter1.md.txt
@@ -48,7 +48,7 @@ Choose Basic -> show icon “heart” inside “On WiFi connected”<BR><P>
 <P>
 
 <span id="subtitle">Full Solution<BR><P>
-MakeCode:[https://makecode.microbit.org/_Ydr63W8HdLDU](https://makecode.microbit.org/v2/#pub:_Ydr63W8HdLDU)<BR><P>
+MakeCode: [https://makecode.microbit.org/_Ydr63W8HdLDU](https://makecode.microbit.org/v2/#pub:_Ydr63W8HdLDU)<BR><P>
 You could also download the program from the following website:<BR>
 <iframe src="https://makecode.microbit.org/v2/#pub:_Ydr63W8HdLDU" width="100%" height="500" frameborder="0"></iframe>
 <BR><P>
diff --git a/docs/_build/html/smartcity/case01.html b/docs/_build/html/smartcity/case01.html
index a36846d1..e921103d 100644
--- a/docs/_build/html/smartcity/case01.html
+++ b/docs/_build/html/smartcity/case01.html
@@ -253,7 +253,7 @@ <h2><span class="section-number">9.6. </span>Programming:<a class="headerlink" h
 Else, turn white LED to 0 at P1 as turing off white LED.<P>
 <img alt="auto_fit" src="../_images/Case1_08.png" /><P></p>
 <p><span id="subtitle">Full Solution<BR><P>
-MakeCode:<a class="reference external" href="https://makecode.microbit.org/v2/#pub:_M75EdA7XVUHW">https://makecode.microbit.org/_M75EdA7XVUHW</a><BR><P>
+MakeCode: <a class="reference external" href="https://makecode.microbit.org/v2/#pub:_M75EdA7XVUHW">https://makecode.microbit.org/_M75EdA7XVUHW</a><BR><P>
 You could also download the program from the following website:<BR></p>
 <iframe src="https://makecode.microbit.org/v2/#pub:_M75EdA7XVUHW" width="100%" height="500" frameborder="0"></iframe><P></div>
 <div class="section" id="result">
diff --git a/docs/_build/html/smartcity/chapter1.html b/docs/_build/html/smartcity/chapter1.html
index 13d992aa..8cc49307 100644
--- a/docs/_build/html/smartcity/chapter1.html
+++ b/docs/_build/html/smartcity/chapter1.html
@@ -224,7 +224,7 @@ <h2><span class="section-number">3.2. </span>Programming (Makecode)<a class="hea
 Choose Basic -&gt; show icon “heart” inside “On WiFi connected”<BR><P>
 <img alt="pic_600" src="../_images/Ch1_07.png" /></p>
 <P><p><span id="subtitle">Full Solution<BR><P>
-MakeCode:<a class="reference external" href="https://makecode.microbit.org/v2/#pub:_Ydr63W8HdLDU">https://makecode.microbit.org/_Ydr63W8HdLDU</a><BR><P>
+MakeCode: <a class="reference external" href="https://makecode.microbit.org/v2/#pub:_Ydr63W8HdLDU">https://makecode.microbit.org/_Ydr63W8HdLDU</a><BR><P>
 You could also download the program from the following website:<BR></p>
 <iframe src="https://makecode.microbit.org/v2/#pub:_Ydr63W8HdLDU" width="100%" height="500" frameborder="0"></iframe>
 <BR><P></div>
diff --git a/docs/smartcity/case01.md b/docs/smartcity/case01.md
index 1c977153..fb41308d 100644
--- a/docs/smartcity/case01.md
+++ b/docs/smartcity/case01.md
@@ -81,7 +81,7 @@ Else, turn white LED to 0 at P1 as turing off white LED.<P>
 ![auto_fit](images/Case1_08.png)<P>
 
 <span id="subtitle">Full Solution<BR><P>
-MakeCode:[https://makecode.microbit.org/_M75EdA7XVUHW](https://makecode.microbit.org/v2/#pub:_M75EdA7XVUHW)<BR><P>
+MakeCode: [https://makecode.microbit.org/_M75EdA7XVUHW](https://makecode.microbit.org/v2/#pub:_M75EdA7XVUHW)<BR><P>
 You could also download the program from the following website:<BR>
 <iframe src="https://makecode.microbit.org/v2/#pub:_M75EdA7XVUHW" width="100%" height="500" frameborder="0"></iframe>
 
diff --git a/docs/smartcity/chapter1.md b/docs/smartcity/chapter1.md
index a8784a21..f916555e 100644
--- a/docs/smartcity/chapter1.md
+++ b/docs/smartcity/chapter1.md
@@ -48,7 +48,7 @@ Choose Basic -> show icon “heart” inside “On WiFi connected”<BR><P>
 <P>
 
 <span id="subtitle">Full Solution<BR><P>
-MakeCode:[https://makecode.microbit.org/_Ydr63W8HdLDU](https://makecode.microbit.org/v2/#pub:_Ydr63W8HdLDU)<BR><P>
+MakeCode: [https://makecode.microbit.org/_Ydr63W8HdLDU](https://makecode.microbit.org/v2/#pub:_Ydr63W8HdLDU)<BR><P>
 You could also download the program from the following website:<BR>
 <iframe src="https://makecode.microbit.org/v2/#pub:_Ydr63W8HdLDU" width="100%" height="500" frameborder="0"></iframe>
 <BR><P>