There are voices in China who claim their GDP growth is already below that (one Chinese economist is going so far as to say the country's GDP is actually in decline) and that the government is hiding this fact.
These voices, of course, are being silenced.
https://www.theepochtimes.com/china-may-be-experiencing-negative-gdp-growth-says-senior-economist_2744261.html

https://asia.nikkei.com/Economy/Outspoken-China-economist-casts-doubt-on-growth-forecast

http://www.asianews.it/news-en/Xiang-Songzuo:-China's-economic-data-are-far-from-reality-48359.html

https://www.zerohedge.com/news/2019-01-05/china-censors-economics-professor-who-claims-real-gdp-growth-below-2

https://asia.nikkei.com/Economy/China-s-mountain-of-bad-debt-climbs-10-in-6-months