When citing statistics, complete citation would be helpful; partial info is somewhere between misleading and useless. Are the salaries quoted per month or per year? If per year, the salaries are quite a bit below the national average. If per month, the magazine must have restricted its survey to the sort of women who read "W" in the U.S. and similar mags in other countries - the rich and privileged.
I'll not be shedding any tears for those women (or men) any time soon. I know many college-educated women with white collar jobs who make about 4000 RMB per month. Complete stats? For women in the publishing industry, that's after-tax, with vacation, health and retirement benefits, but no food nor housing benefit. For teachers, that's after-tax, and often includes free or low-cost housing and food in addition to usual benefits. For publishing and education I don't know of any salary disparity based on sex within similar positions and experience, but men are have a disproportionate share of higher-salaried administrative and managerial positions.
Regarding the daily commute of nearly 2 hours, I'm not surprised. Even if the salaries cited are monthly, plugging the numbers into a U.S.-website residential calculator like zillow.com* indicates the "average" family can only afford a 1.5M RMB apartment. Where, inside the 4th Ring, can you find a decent place (not tiny or decrepit) for that price big enough for a family?** Again, I don't believe the numbers represent the true "average" family in Beijing, but you can see even "average" privileged families can't afford Beijing's high housing prices.
* If you know of a good housing price calculator website applicable to Beijing, please let me know.
** Again, the article lacks essential facts. How many adults are in the "average family"? Parents, child and grandparents? They should have at least three rooms. Parents and one child? If so, then dad makes about 2x mom's salary. If that's true, so much for Mao's "women hold up half the sky."