I can only type about 10 words in a minute.

When describing speed or rates in English, we often leave out the word "in". E.g. 60 miles an hour

There are many reasons for this situation.

First of all, the common sequences of English wordletters are very different from Chinese words.

Haha, I think this is a common mistake, since Chinese doesn't really distinguish letters from words (characters)... Here you would say English letters ("i", "o", "n") not words.

Secondly, I’m lack of theknowledge of common phrases in English, so Iit’s very hard to say something, notlet alone to write it down, t. This lmeads to a resultns that I have to think for a while before writing, even if it’s just a very easy sentence.

I looked at what you wrote in Chinese, I think it's closer to "I'm not familiar with common ways of expressing myself"

Instead of "this leads to a result", you can simply say "this means that"

Thirdly, I don’t have too muchmany opportunityies to write in English in my daily work.

I would say opportunities are countable, hence many + plural

So I have to force myself to practice, just like going to the gym for muscle building everydayeveryday to build muscle.

muscle building isn't really a phrase in English, you could say weightlifting instead.

I put "everyday" closer to the action it describes, "going to the gym". Then I added the purpose: "to build muscle".

But at least, I am on the way tof improving.

The above short entry costtook me over 10 minutes.

Took me over (time)
vs. Cost me (time)

I can only type about 10 words in aper minute.

“words per minute” is the more common phrase. It follows the standard “(quantity) per (duration)” framework. Eg: miles per hour, steps per minute, etc.

First of all, the common sequences of English words ais very different from those of Chinese words.

“those of” makes it so you’re comparing the sequences of English words to the sequences of Chinese words.

The examples you provide in the next sentence aren’t words, but rather prefixes and suffixes or letter sequences / letter patterns.

In contraryst, “huang”, “zhe”, “ting” are very common in Chinese Pinyin.

“On the contrary, …” is used to show two things are opposite. “I thought my guests would enjoy chocolate cake. On the contrary, the preferred vanilla.”

“In contrast, …” shows two things are different. “English does X; in contrast Chinese does Y” or “I like apples; in contrast, my friend likes bananas”

Secondly, I’m lack of theknowledge of common phrases in English, so Iit’s very hard to know how to say something, notlet alone to write it down, this leads to a. The result is that I have to think for a while before writing, even if it’s just a very easy sentence.

I lack
I am (I’m) lacking

I’m not sure what you intended here. I think it was “It’s hard to think of what to say. And it’s even harder to get it down onto the page.”

Thirdly, I don’t have too muchany opportunityies to write in English in / for / during my daily work.

So I have to force myself to practice, just like going to the gym for muscle building every day.

Everyday – adjective: “my everyday jacket”
Every day – “every” modifies “day” > “this happens daily”

But at least, I am on the way tof improving.

The above short entry costtook me over 10 minutes.

There are many reasons for this situation.

Secondly, I’'m lack of not familiar withe common phrases in EnglishEnglish phrases, so Iit’s very hard to say something, not to write it down, this leads tothe sentences, let alone writing them down. As a result that, I have to think for a while before writing, even if it’s just a very easy sentence.

"let alone," "nevermind," "not to mention" all have similar meanings of 更别说

But at least, I am on the way tof improving.

The above short entry costtook me over 10 minutes.