As we all know, https can effectively improve the security of information transmission. Compared with http websites, those websites with https protocol have higher scores in the SEO search ranking algorithm and have more chances to achieve higher keyword rankings.
In China, does https help in SEO?
It may be beyond your imagination. The answer is no help.
On Baidu, you can easily observe the top 10 searches for various keywords. There are as many websites from http and https, and there is no obvious difference.
Why is this happening?
One possible explanation is that the Chinese are not sensitive to information security. Sometimes, for government regulatory requests, search engines do not require websites to force the https protocol.