Haha, you are so humble, this couplet is perfect! Look:
The first line: 平仄仄仄平仄
The second line: 仄平平平仄仄平
Up and down are opposite, perfect! Let’s look at the content again:
“Predecessors” and “descendants” correspond to each other. “Building the Sunshine Road” is about describing the reality, and “Let’s run towards the beautiful journey together” is about thinking about the future. The virtual and the real are relative, and the “Sunshine Road” and "Jinxiucheng" contains metaphors and is full of literary talent.
So it can be called a good couplet without any changes.