OK, this is what I found.
1. PPCs don't block incoming chinese traffic. It is Chinese government blocks outbound traffic to those PPC landing pages. Tried couple proxy servers in China to get connected to landing pages at Sedo, TrafficClub, Goldkey, Trafficz... didn't work.
2. Google's AdSense would be a good solution if you can make a nice Chinese-language site. But be very careful you could lose your account because somehow Google thinks clicks from big Chinese traffic are invalid.
3. Another big problem is Chinese people usually don't have a credit card, even if they have one, they don't like to use it on internet. It means Chinese traffics have extreamly low conversion rate. That's why nobody likes Chinese traffic.
4. I tried Scenzo but they never replied.
5. You can try
AsianFriendFinder (my partner code embeded) if you are desperate. And forward your traffic to Chinese-language-page like this:
1233.com. If you want to know earnings from Asiafriendfinder, just post a question and we will discuss about it.
6. I have found a hard-core adult affilate system and they run Chinese adult site for Chinese. Haven't tried yet.