China is one of the top source countries for temporary resident visa applications to China. In 2016, the number of people who applied for temporary resident visas was 492,370. Of the people who were granted visas, 822 declared refugee status. The number is unbelievably small, and represents what Immigration, Refugees and Citizenship Canada calls a risk ratio of 0.16%.
I have reproduced an internal IRCC report titled 2016 Annual Refugee Claim Trend Analysis Summary report below.A201769568_2019-01-11_15-48-15