Im glad you posted that. Since Chinese numbers are not to be trusted, it may be a week or two further ahead of the dates given...
The projection is pretty close, today. But the actual numbers lept ahead of it early and fell behind later. So where the projection uses a rock-steady percentage growth each day, the reality is that it was spreading faster, and has now stopped spreading faster.
My data show a growth in the number of new cases of up to 130%, averaging around 70%, for 9 days... but a peak reached in the number of new cases 3 days ago (no new data for today).