Why Conv2_1 has stride of (1,1)?

[huangh12]

Hello,
Thanks for your rep.
It's wirtten in the readme that:

conv2_1 has stride of (1, 1) while remaining conv layers has stride (2, 2) at the beginning of the block. This fact is expressed in the following lines.

However, I don't quite understand how the linked lines explain the reason why conv2_1 has stride of (1,1). Actually I am curious about that for long time. Could you please that for me?
Thank you! 😄