diff --git a/docs/checklist/first_lab.md b/docs/checklist/first_lab.md
index a933b73..3661b31 100644
--- a/docs/checklist/first_lab.md
+++ b/docs/checklist/first_lab.md
@@ -1,22 +1,23 @@
 ## First Lab CheckList
-
+[x] `---29/01/2020  drafted by Yimian Liu`   
 
 ## Task 
 
 ### compulsory
 
-[] Write AA meeting record table and email to AA
-[] Learn Markdown & Git
-[] Find all component models
-[] Build all component models that not provided
-[] Finish the circuit except the BPF and impedance
-[] Simulate to get the BPF band range
-[] Design BPF and insert to circuit
+[] Write AA meeting record table and email to AA   
+[] Learn Markdown & Git   
+[] Find all component models   
+[] Build all component models that not provided   
+[] Finish the circuit except the BPF and impedance   
+[] Simulate to get the BPF band range   
+[] Design BPF and insert to circuit   
+
 --------------
 
 ### optional
 
-[] Simulate the circuit and evaluate the result
-[] Design the circuit to be 50ohms
-[] Simulate the circuit
-[] check and order the components we need
\ No newline at end of file
+[] Simulate the circuit and evaluate the result   
+[] Design the circuit to be 50ohms   
+[] Simulate the circuit   
+[] check and order the components we need