docs(dn): Hongtai_Du_09/21/2025 (#390)

Author: HongtaiDu

src/design_notebooks/2025fall/hd2609.md

@@ -9,3 +9,12 @@
 * Worked a few simple Verilog basics problem on the website in Powerpoint
 
 Summary: this week is just beginning week. I plan to find a partner during next meeting. Also, I'd like to disscuss with team leader to continue work my project or restart the project this semester. 
+
+## Week of September 14th
+
+### Project Work
+
+* Continued to do some Verilog practice questions on the HDLBits. I finished until "Declaring wires" problem. 
+* Finished lab 1 this week. There are 3 more labs to be done.
+
+Summary: This week I mainly discussed about what I continued to do next in the meeting with Darren. We plan to do on-boarding labs for a few weeks. Then we know how to test our code on board.