How to make these into Chinese sentences? (To make it sound more naturally when pronounced orally.)
Learning Chinese wasn't difficult, but being able to master it and remember every character learned, wasn't that easy.

Wealthy people can buy all things they wanted to buy.

My family just came back from China, they bought a piece of calligraphy, which was very beautiful.

Question

How to make these into Chinese sentences? (To make it sound more naturally when pronounced orally.)
Learning Chinese wasn't difficult, but being able to master it and remember every character learned, wasn't that easy.

Wealthy people can buy all things they wanted to buy.

My family just came back from China, they bought a piece of calligraphy, which was very beautiful.

Answer

学习汉语并不困难，但是要能掌握并记牢所有学过的汉字却没那么简单。Learning Chinese wasn't difficult, but being able to master it and remember every character learned, wasn't that easy.

有钱人想买啥就能买到啥。Wealthy people can buy all things they wanted to buy

我的家人刚从中国回来，他们买了一幅非常精美的书法。My family just came back from China, they bought a piece of calligraphy, which was very beautiful.

Answer

学习汉语不难，但掌握它并理解所有学过的知识却又不那么容易。
富有的人可以买到他们想要的所有东西。
我的家人刚从中国回来，他们买了一幅很漂亮的书法作品。