Yes you are right. I moved the data one day forward as it seems more natural to call data that we received today as todays data and not yesterday's, but that was a bad idea. I fixed that.
Also I tried to add as much info about the sources I had now. I will try to improve on that later. The site mentioned here https://news.sina.cn/zt_d/yiqing0121 really looks like finally one good source of the data I was looking for.
I need to get some sleep now.