China rapidly tripled their emissions from 2000 to 2010, but after 2011 they have hardly increased at all.
Second graph here:
Report dated 30 Nov 2018
"China is positioning itself as a global climate leader, and its actions have an enormous impact on global greenhouse gas emissions. Discouragingly, a rise in coal consumption drove Chinese CO2 emissions to a new high in 2017, which will likely be exceeded again in 2018."