China needs to do much better to protect the health of citizens. Pollution report

Air Quality PM2.5 2018 Dec 02 10:00 Toronto time, readings for China: Xi’an 592, Beijing 268 vs Toronto at 17. Terrible for your health.

Air Quality PM2.5 2018 Dec 02 16:00 Toronto time readings for China: Xi'an 739, Beijing 453 vs Toronto at 34. Terrible for your health.

Air Quality PM2.5 2018 Dec 04 22:00 Toronto time readings for China: Xi'an 245, Beijing 86 vs Toronto at 5. Terrible for your health.
I use the AQICN.org site for my Chinese multi-city display.