diff --git a/Activity01/myviewer.py b/Activity01/myviewer.py
new file mode 100644
index 0000000..14b6700
--- /dev/null
+++ b/Activity01/myviewer.py
@@ -0,0 +1,21 @@
+import sys
+from ase.io import read
+from msspec.msspecgui.msspec.gui.clusterviewer import ClusterViewer
+import wx
+
+def view(cluster):
+    app = wx.App(False)
+    win = wx.Frame(None, size=wx.Size(480, 340))
+    cluster_viewer = ClusterViewer(win, size=wx.Size(480,340))
+    cluster_viewer.set_atoms(cluster, rescale=True, center=True)
+    cluster_viewer.rotate_atoms(0.,180.)
+    cluster_viewer.rotate_atoms(-45., 45.)
+    win.Show()
+    app.MainLoop()
+
+
+
+if __name__ == "__main__":
+    fname = sys.argv[1]
+    cluster = read(fname)
+    view(cluster)
diff --git a/Activity02/myviewer.py b/Activity02/myviewer.py
new file mode 120000
index 0000000..6c379e1
--- /dev/null
+++ b/Activity02/myviewer.py
@@ -0,0 +1 @@
+../Activity01/myviewer.py
\ No newline at end of file