I just learned from Bitsyncom that tracking numbers aren't generated until they leave mainland China [i.e. Customs]. Then it is handed off to DHL which then generates the tracking number.
can we infer that jeff's package has not left china, but bitsyncom still expects delivery around thursday? i guess it's possible. if thursday delivery, then jeff should have a tracking number by tomorrow at the latest.
EDIT: didn't yifu say he paid $400 to get it out of the country? if that's the case, then either he wasted his money or what he told you is incorrect, or he is withholding the tracking number.