City of Beijing Data Portal
bjdata.gov.cn
bjdata.gov.cn
I tried to download a dataset. Registration, on this http://www.bjdata.gov.cn/tabid/99/Default.aspx registration page, requires:
Username; Password; Password repeated; Real name; Sex; Mobile telephone number; Fixed number / Landline; Email address; Checkbox whether commercial use is required (if so: Company / Organisation name; Company registration code; Company website; Area of business); Captcha; Submit button.
But it seems no confirmation of registration via email or telephone is necessary, it it just takes you to the page you were earlier looking for.
I love China's Internet, especially government sites. They even added a 2D bouncing Pong-style picture of an airplance on the front page, which probably got someone a promotion as that's particularly special.
Which is especially fun on mobile.