What you described in your letter perfectly shows the two opposite sides of today's China: a promising and unique opportunity for the rich and an unfair and awkward condition for the poor (which is exactly what I have observed during these years).
Over-worked, low pay, poor working and living conditions…..
The government must do more to help the poor. After all, isn's it true that China is supposed to be a government of the people, by the people, and for the people?