Chinese webmasters are paying more and more attention to broken links or dead links, because such links are directly related to indexing and traffic conversion of websites. And here are official replies from Baidu to some questions about broken links.
Q: Is robots shielding effective for preventing Baidu from crawling broken links?
A: Of course, Baidu strictly follows robots protocol. If you find Baidu fetches broken links regardless of robots file, you should confirm that it is Baiduspider, if yes, you can make a complaint at the feedback center.