The best trading concepts introduction website.

Updated at 2020.04.08, thanks to Joel Foster.

Birthday number, a list of interesting days(numbers) in person’s life.

All published maps of China are deviated. GPS devices sold in China are modified to give the same deviated coordinates.

Wu Yongzheng find the deviation of China Map is a regression problem.

We can see the answer at here.

Some article in Chinese, History about Crack China Map Problem，About GCJ-02.

roadmark of deep web.

GitHub receives requests from governments to remove content that has been declared unlawful in their local jurisdiction.

I know it from the Cyber Security Association of China sent github a mail to delete something in Github (in Chinese)

I think the post is a rumor. Github is not a place for politics.