LCSC's Practical ESP32-C3 Development Board Successfully Replicated

LCSC development board: https://oshwhub.com/li-chuang-kai-fa-ban/xd-esp32c3-aiot-v1_3_2
 
A few minor modifications were made to the PCB; some components were replaced with ones I already had in stock!
There was a small hiccup during the replication process: I originally wanted to use the ESP32-C3FN4 chip, which would save on a Flash memory chip. After uploading the firmware, the first few examples worked fine, but a problem occurred when testing the sound. After uploading, the C3FN4 could no longer be flashed with firmware. I don't know if the problem is caused by changing GPIO12 to a regular IO! I suggest everyone not to try using the C2FN4 chip!
The touchscreen has been successfully assembled; please see the third supplementary image and the second video!
The cost is really high; I suggest buying the finished product from the LCSC online store if it's in stock!
 
After the touchscreen is assembled, all functions are implemented, except that in echo mode, the microphone may have noise that causes speaker feedback; I don't know the specific cause or solution!