Core Insights - Xiaomi's founder and CEO Lei Jun shared a post about a creative modification of the REDMI K90 Pro Max, featuring a back cover made from denim, which includes a replica of the signature of REDMI's acoustic ambassador, Eason Chan [1] Group 1: Product Features - The REDMI K90 Pro Max is the first "Pro Max" model in the REDMI brand's history [5] - It is equipped with the fifth-generation Snapdragon 8 Supreme mobile platform and features a 6.67-inch 2K resolution display with ultrasonic fingerprint recognition [5] - The main camera includes a 50-megapixel sensor with OIS optical stabilization, and it introduces a periscope telephoto lens for the first time [5] Group 2: Design and Customization - A fashion blogger showcased three custom back covers for the REDMI K90 Pro Max, including one that replicates Eason Chan's signature and others featuring distressed denim styles [3] - The existing "denim color" of the REDMI K90 Pro Max uses twill fabric and indigo dye, resembling denim texture and color, with enhanced durability due to third-generation nano leather technology [5]