So I watched the online version that has 40 eps unlike the 46 here

Well, I don't know how to start but in my opinion, it was one of the best chinese dramas I have ever watched. It was so relatable and realistic by the development of the story. What I also really appreciated was, they include other characters stories such as Li Jianjian's friends, especially her bestfriends.

It's true that I was so endeared when the three main characters (Li Jianjian, Ling Xiao and He Ziqiu) , were young and I was litterally binge watching those eps bt then, when they were adults, the feels were not the same but I was still attached / endeared by them. At first, I was touched/moved by one character and it was Ziqiu. Each scene, my eyes teared up when he appeared. I must applaud the child actor who delivered really well his expressions, and the teenager one / the adult one playde by Zhang Xinchen was a realy good actor. Whenever I saw him on screen (but it was mostly at the begining), he made me cry. I really like his character, I wanted to comfort him so bad.
And then, when they came to the story of Lingxiao, I also wanted to comfort him and I hated his mother but I think, it's a pity that in asian countries, they didn't give some professionnal helps (to see a psy) because I know, it was so hard for her since at that time, she lost her daughter. I feel like on one hand I hated her for her behaviour and she hurts her own son, Lingxiao, she litterally destroyed her family, impacted them, especially Lingxiao but on another hand, I feel like I pity her because they didn't help her (I mean to help her healing when she lost her daughter). But the actress was excellent.
I really loved Ziqiu's mother and when I wanted to hate her because she abandoned her son, I didn't hate her when I knew the truth and I'm glad for the ending she got. She's indeed a beautiful person.
Of course, I was jealous of Li Jianjian's relationship with those two haha but seriously, I really loved their dynamics and I don't know why, there was a moment, I wanted her to end with Ziqiu because, even though I knew it was only siblings energy but when they were adults, they were looking good together. But maybe, these two actors would collaborate again later, maybe because I'm sure, the chemi will be there!
I think, The spotlight goes to the dad of Li Jianjian, what a humble man! I really appreciated his character as a father (i think, the best father here) who was here for them.

I don't know what to add but each characters were interesting and relatable (well not everyone but some yes) but anyway, all the actors brought alive these characters. Go ahead teaches us some life lessons, how to be a parent, how to love each other as family (and sometime even when they are not blood releated) and friends and also, how to overcome obstacles in life. It's also true when, we grow up, we migt be not as close as before. It was so real, I felt that.

For the romance part, I honestly wasn't so surprised since I knew at the beginning with some details and differences.

As an Asian, I really relate to them and for me, Go ahead is one of the best slice of life drama and it has now a special place in my heart.

In addition, all the OST bring some magical feelings (well not magic but it brings something to the heart and to complete the drama), Beautiful soundtracks to listen, mostly before sleeping, when it rains or at night. It somehow, comfort us.