Decades ago in the countryside inof China, farmers held their grains with "茓子" (xué zi).

I don't want to change it because it is still correct, though in "farmers held their grains with "茓子" (xué zi).", you could also have "using" or "in" in place of "with".

Decades ago in the countryside inof China, farmers held their grains with "茓子" (xué zi).

This stuff was made from reed strips (as you can see in the picture), i. It was narrow and long.

Avoid run-on sentences when writing English.

When fFarmers use it, while by putting grains in its circle, they just. Then they simply rotate it andto make it gradually higher.

I didn't know how to say it in English at first, and. Then I saw a translation app that said that it was a "coarse mat".

Work to avoid run-on sentences (two complete sentences connected without proper punctuation or connecting words).

Because I amwas not sure, I got a picture of it to make it clear to my readers.

In the last sentence you saw the translation in the past, and you got a picture in the past, so to be consistent you would say you were also uncertain in the past.

There is a Chinese word "当场" or "现场"(dāng chǎng, xiàn chǎng), I also didn’don't know an equivalent English word for it.

Here you can use the present tense, because you still don't know an equivalent word, and there is nothing else you need to be consistent with.

I looked the word up oin a translation app.

You can say "on", but the preposition "in" is more common and more correct.

By saying "we baked the sweet potatoes on the spot", it means where we foune baked them and where we bakefound them.