In June 2023, WeChat Keyboard underwent a rebranding to "WeChat Input Method," garnering favorable reviews at the time. Two years later, how does this input method fare with its advanced AI capabilities? What is driving WeChat's significant investment in input methods? This article delves into WeChat's strategic rationale from the lens of user experience. Following optimizations, WeChat Input Method now boasts features like text-to-image conversion and AI-powered search, significantly enhancing user interaction efficiency. WeChat's initiatives are aimed at bolstering data security, fostering deep integration within the WeChat ecosystem, and constructing a closed loop to exercise greater control over user experience and data, ultimately fueling product optimization and innovation.