It looks like the jump in downloads in China has come to an end. Stopping abruptly as it begun.
The China trend has maintained now for over a month and the download numbers are pretty stable between 400-600 a day across all iOS apps.
The sales in China are remaining consistent around the 350-400 mark per day, right across the suite of titles, curiouser and curiouser.
The downloads are staying reasonably consistent for a week now, so it may be a longer term trend.