macau
try the Thai girls at D1.
many of the "senior" girls does CIM and swallow.
No.7 definitely does swallow.
china
highly unlikely, unless she has cum fetish or very old.
most girls are already reluctant to do CIM.
even if u managed to CIM, most will run off to vomit.
but if u really want to find one, go to saunas, find a WG to be your FB, then train her to swallow...
then introduce to us.
thank you.