Chinese citizens can obtain their tax statements by downloading the official tax application and logging in. However, if you are a foreign national, you will need to visit the tax bureau where the company you were employed with initially registered. For instance, if your employing company is registered in the Changning district, you should head to the Changning district tax bureau.

Even if you've worked for multiple companies, you only need to visit one tax bureau, specifically the one associated with your most recent employer. Remember to bring your passport and a photocopy of it when you go.

Once you've completed all the necessary procedures, you'll receive a document that includes your registration code, as illustrated in the picture.

The app goes by the name "Personal Income Tax." Search for 个人所得税 ("ge ren suo de shui") and download it.

Go to the home page and select 我要办税 ("wo yao ban shui") to proceed to the next page. Once you're on the next page, scroll down and click on 纳税记录开具 ("na shui ji lu kai ju") to access your tax statement.

This is the page you'll proceed to next. If you're using your passport to log in, you'll need the registration code you got from the tax bureau in the previous step. The screenshot here is from a Chinese citizen, so there's no need for a registration code.

Select the desired time period for your tax statement, swipe the white button to the right, and click the blue button to go to the next step.

Your statement should be ready in just a few seconds. You can click on 预览 (preview) to see a preview of your statement and 保存 (save) to download it. 

...and this is what your tax statement looks like. 

Good luck!