Thanks to all, by the way, the DFW can I stopover? The rule says "Two permitted in North America." while it said "Two permitted in North America when one is a transfer without stopover." when I bought it. Any chance the airline allow me to add a stopover there?

More interesting, the rule was "Two permitted in Asia when one is a transfer without stopover or on direct single plane service between the Southwest Pacific and Europe/Middle East." and now became "Two permitted in Asia when one is for travel between the Southwest Pacific and Europe/Middle East." So if the airline follow the new rule most likely they will not allow me go PER-xHKG-DFW anymore. Good for somebody here recommended me to safe the PDF when I bought it. Forgot who he is, but big thanks to him.
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A bit off topic but may I ask anybody for good suggestion to build one more segment to my itinerary? Maximize miles is good, and travelling is better. I accumulate to AA, and do want to avoid AA unless a person can suggest me how to force it to accumulate in distance method =). Preferably adding that segment after LAX as I have got my AA EXP at that point. I repeat my itinerary here.

CAI AMM HKG MLE HKG (flown) CTS HKG PER xHKG xDFW SCL LAX xDOH CPT LHR MCT

For me, SCL, CPT, and MCT are good places to go. Hubs/Major cities I have generally done most of them.

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Many thanks to all again

Hypnotic Spector