Ok, here are the "unsolved misteries".
1. Funny Hong Kong "stuff" for a class speech [REQ by xxx@hia.no]
2. Selling birth control pill to China [REQ by xxx@t-online.de]
3. Chinese military capability by numbers [REQ by xxx@ucbeh.san.uc.edu]
4. "Police shoulder patch" from any police department on Mainland China
[REQ by xxx@jax-inter.net]