Look here:
http://travel.state.gov/visa/immigrants/ty...types_1306.htmlShe will be filing I-130s for son and brother.
If son is unmarried, he will be F-1 preference. If married then F-3 pref. If son is un-married she can file for F-2b pref as LPR NOW and then get it upped to F-1 after naturalizes.
Brother will be F-4 pref.
In any case this will take YEARS to get a visa number, only parents and spouses of US Citizen get un-limited preference.
Currently processing:
F-1 from Feb 02 (6 Years)
F-2b from Feb 99 (9 Years)
F-4 from Dec 96 (12 years)
http://travel.state.gov/visa/frvi/bulletin...letin_3953.htmlLastly you may be interested in "A Candle for Love" that site specializes in Chinese immigrations and has a lot of info on the consulate in Gunagzhou China.
http://candleforlove.com