In 2014, the number of design patents with GUI in China was more than 5,000, which was 6,638 in 2015, and 9,864 in 2016, a growth rate of up to 48.6%. In 2017, this number basically equaled that in 2016.
As of the date of the article, there had been 57 re-examination requests and seven invalidation requests concerning GUI design patents.
http://www.iprchn.com/cipnews/news_content.aspx?newsId=108196