Actually, this varies from person to person.
If you treat emotional people with the same way as rational people, then not only will the effect be bad but also counterproductive, and vice versa.
Let me tell you how I would have been here if it were me.
I will spend a day or two to take a look at the ** that I have taken of the places I have walked with her, and then from the first day I know each other, I will find one or two meaningful ** in each place, and then take it to the photo gallery and wash it out.
Then I'll buy a nice big notebook, put two **s on each page, glue them together, and then write some words in the margins.
It can be your own feelings at the time, or your desire for two people at that time, etc., this will vary from person to person.
On the last page, I will write my blessings, my love for her, and a vision of a beautiful one.
On the day of the Qixi Festival, you can find a place for two people to go on a date for the first time, or you can find a place that is relatively quiet, romantic or has some special significance for dinner.
You can take this notebook of yours to the other party during the meal, I will tell her if it is me, and I hope that every page that is not used up will be written in the future with the moments of you and me, and record our good times.
Of course, this is just my thoughts, maybe I am a more spiritual person, so I think of this flashy way.
Of course, there are many romantic ways, such as sending a ring to propose marriage that day, the whole process is carefully designed, and then find some special people to witness, when doing this, you must first determine whether the other party loves you, or to that point, otherwise there is a suspicion of moral kidnapping.
You can also send a bouquet of flowers that the other person likes, or take her to have a good day, at such a time sometimes a hug, a look and a kiss can have a different meaning.
So I don't think there is any unique way for this, different people have different Tanabata.