I had this thought while reading the posts about Sakura's memories. Sakura is the daughter of Clow. Clow Reed. And Fei Wong Reed is also a decendent of clow. So that would mean, via logic, he's Sakura's grandchild or soemthing like that. ( I don't even want to consider him being Sakura's SON!) But we can thank Clamp for having the alternate dimensions thing. The time issues not a problem. I just find it weird that someone would go and essentially attack their own ancestor. The only other thing I could think of to avoid that line of Logic is that we have Clow Reed from another dimension ( aka CCS) and Fei decents from that Clow. Since we've had characters from all series and such being introduced it maybe hides the fact that, as far as I know, they've never ONCE crossed into one of the worlds Clamp has actually created save in XXXholic. XXXholic was needed for Yuko the witch and for them to get Mokana, but they've yet to actually enter any world besides there where they've had an established series beforehand. Even XXXholic, as far as I can recall, wasn't all that long when it crossed over. And we also know, from what Yuko said, that souls are the same in different worlds they just lead different lives, and also that powerful people are less likely to have doubles of themselves. That leads me to think that's there's only ONE clow and ONE Yuko while we've seen there are multiple Syarons anyways. Sorry for rambling so much but one thought just lead to the other and so forth....