Siyun Chen, associate professor at Sun Yat-sen University, discusses her research showing masculine brands perform better with simple ad designs while feminine brands achieve better results with complex designs. The conversation covers how visual complexity is determined by element count, detail level, and arrangement irregularity, why the effect works through subconscious conceptual fluency, and how brand gender can be manipulated through names, colors, and visual elements. Chen explains the role of holistic versus analytical thinking styles, why following design trends without considering brand fit is the biggest mistake practitioners make, and practical guidelines for determining appropriate complexity levels.