I have viewed the Chinese version of the homepage of the Commerce and Economic Development Bureau. I clicked on the validation icon for HTML 4.01 at the lower right-hand corner.
To my surprise, an error was produced.
Lacking time to write an email with good grammar to the authories, I am waiting for someone to notice this error and I am looking forward to seeing that this problem will be rectified.
To know more about the usage of the W3C validation icons, you may go to the FAQ for the validation service.