Rob Kardashian & Blac Chyna: We Don't Fight ... We're Tight

Rob Kardashian returned to L.A. Tuesday with his cargo ... Blac Chyna.

Rob and Chyna breezed through LAX without saying anything, but making it clear all the stories saying they broke up after a blow-out fight are crap.

Rob wore the same outfit as the day before ... down to the Yeezys.