Chinese income buckets were discussed here a few days ago. This is more relevant to most people here. Please duihao ruzuo.
WSJ has some details about the 2007 returns of the high income earners.
Tax payers in the top 1% earned a AGI of at least $364,657 and taxpayers in the top 5% earned at least $145,283 and taxpayers in the top 10% earned at least $103,912.

The top 400 earners received an average annual income of $213.9 million.

Median after-tax income is $55,900