It’s known that Baidu doesn’t do a good job in indexing new pages – especially from a new website, or in confirming whether an article is original or plagiarism.
I have a personal Chinese blog on translation, I wrote all the articles by myself for it in the past 6 years, but they still needs to wait for 2 to 4 days after publishing to be indexed by Baidu.
Fortunately, the blog is old and quality enough for Baidu to believe that its content is original, but for those new sites/pages targeting Chinese market, it might take a longer time for Baidu to index and evaluate them, and they would face greater risks of being copied and losing rankings.