The sources are in the links, and they then link onto where they got there info from, if you want to look further into this.
Oh, and in regards to the suicide rate.
The trouble with statistics like these is that they're not just flat numbers, it always "X out of 10'000" or "X out of a 1000" people.
This means countries with a larger population can have hundreds of thousands of people killing themselves, but because, in China's case, they literally have over a billion people, the statistics show it as being smaller than other countries with smaller populations.
Infuriatingly, no one gives a flat out answer as to how many this actually is.
So I'll try and work out a rough number myself.
Using current statistics, China's population is currently 1,445,088,627 (or 1.445 Billion).
To keep things consistent, we'll use the same source’s suicide rate of 8.1 out of a 100,000 people.
Unfortunately, this means were going to have use Algebra, which I have not used in 10 years, so take anything I come up with, with a pinch of salt.
So, if the rate in the suicide rate is the mathematical term, then, in order to work out the percentage, we move the decimal point one place to the left.
This gives us 0.81% out of 100,000.
To work out the the the number, we divide the two which gets us 810.
This gives us a percentage of 0.00005605192545744116% which will round to 0.000056%.
We then multiply the two numbers together, 1,445,088,627 X 0.000056, which gives us 80,924.963112 which we'll round to 80,925.
Now, as a whole, this is a small number compared to the overall population; but it's still 80,925 dead people.
This is based off the statistics and information provided by an opaque, authoritarian regime which will do anything to save face and what independent bodies without full access to the information have provided.
Since prevented suicides and failed attempts aren't kept track off, it's hard to say how many have tried but were unsuccessful.