5/7 A/B Testing Visual Variants Some brands used to test only 2-3 images per campaign, relying on intuition to select creatives, leading to a bottleneck in ROI improvement. New approach: lock the same copy, generate 12 variants based on background color, character type, scene, and emotional tone, run a small budget of 3,000 yuan for 48 hours, and select the winner based on data.