That report says averages are $1381/month (120k RMB/year) for "non-private" employees, $800 for private (?), $3000/month in IT, $1500/month in mining. You happened to pick the lowest number.

There seem to be wildly different numbers reported online, but from a more thorough search it looks like the national median is indeed around ~$1400, while the 3k-4k range I mentioned is specifically for the Shangai area.