Acknowledgments
I would like to express my sincere gratitude to Andrew Xu, Benjamin Drahos, Fue Thao for their valuable contributions to the development of Mastering Mandarin Sounds: An Interactive H5P Pressbook. Andrew Xu help designing interactive activities, Fue Thao served as technical assistant, and Benjamin Drahos, providing essential support in recording clear audio samples. Their expertise and dedication greatly enhanced the quality and accessibility of this resource.