The Wedding party

In English, you generally need an article in from of a noun, especially in a title. You are really talking about weddings, and not so much about the wedding party or wedding reception, therefore, I deleted "party"

Splendid and imposing.

I would actually combine the two sentences like this: I attended a wedding party at noon, and the scene was really amazing, splendid and imposing.

Back toin my childhood, marriage in the countryside was really simple.

I think it sounds more natural to use "in" instead of "to". "To" implies you were just talking about another time in your life, and now you want to go back to the topic of your childhood.

It was likenough to just have an ox-cart with one, a meal, and some fire crackers were enough.

I'm not sure what you are trying to say about the oxcart and the meal. An oxcart is an inanimate object and cannot have a meal. I changed it according to my guess, but the new sentence may not be what you had in mind.

Sometimes, ithe wedding was even simpler.

Since you have introduced other nouns, when you use "it" again, you need to make it clear what you are talking about. I

You just needed a bike to pick up the bride up.

I probably would use this sentence in the passive form, because the audience does not know who "you" is referring to.

When I got married, I borrowed an old Shanghai brand car to pick up my wife.

This sentence is grammatically correct, but it sounds a bit odd to say an old Shanghai brand car.

At theat time, it was even hard to even buy a bike.; therefore,

U,using a car to pick up the bride was considered really luxurious, but. Now it seems liked everyone got married in this way at that time.is doing it this.

Life sucks.is ironic.

I would never use "sucks" in writing. It is very informal and typically used orally, not in a serious story. Also, in reading the rest of your story, I think ironic is a better word to describe your opinion.

When you are young and poor, you can't give your other sidwife what she wants.

When you getare old and rich enough to afford thosnice things, she doesn't need them anymore.

Wedding party

"Wedding" is a more common term for "wedding party"

I attended a wedding party at noon, and the scenery was really amazing.

Splendid and imposingIt was splendid.

"Imposing" isn't a common word but it is sometimes used in fiction.

Back toIn my childhood, marriage in the countryside was really simple.

At the time, it was even hard to buy a bike.!

Your writing is correct, the exclamation mark just adds more expression.

LBut life sucks.

Your writing makes sense, it flows better this way though.

When you are young and poor, you can't give your other sidepartner what she wants.

I attended a wedding party at noon, and the scenery was really amazing.

"amazing" is already very strong, so you don't need "really".

Back toin my childhood, marriage in the countryside was really simple.

It was like an ox-cart with onea meal, and some fire crackers were enough.

"a" sounds better than "one".

Using a car to pick up the bride was reallvery luxurious, but it seemed everyone got married in this way at that time.

You used "really" twice already, so I picked another adverb for you.

When you are young and poor, you can't give your other sidehalf what she wants.

The saying goes "other half" or "better half".

When you get older, and ricbecome rich enough to afford those things, she doesn't need them anymore.