Feng-Long Xie is the audio intelligence team leader of Xiaohongshu where he engages in research and product development in speech, music and audio intelligence. From 2018 to 2021, he was a senior researcher responsible for transferring speech synthesis technology from research to several products at WeChat, Tencent. Prior to that he worked at Microsoft Research Asia from 2012 to 2018 conduting fundamental research on speech synthesis and recognition. His research interests include speech synthesis and recognition, music information retrieval，music generation and audio signal processing.