Authored by Mengni Ni (stage name "Purple NiNi"), a vocal educator with over a decade of experience in Western pop vocal teaching and performance, this book is tailored specifically for Asian students whose first language is not English, addressing the unique challenges they face when singing English songs. Equipped with academic backgrounds from Musicians Institute (USA) and BIMM Institute (UK), and as a member of institutions including the British Council and the National Association of Teachers of Singing (USA), Mengni combines her bilingual teaching expertise across global music colleges to design a 21-day systematic vocal training program centered on Whitney Houston’s classic power ballad "I Have Nothing"—a piece ideal for bridging technical gaps and linguistic barriers. The guide adopts a progressive structure of "Foundation Building → Technique Enhancement → Integration & Mastery," with a strong focus on resolving the core difficulties of non-English native singers: it starts with targeted training on breath support and English diction, breaking bad habits such as "Chinese-accented pronunciation," unclear liaisons, and incorrect vowel shaping, while teaching how to achieve natural, fluent English vocal expression. It then delves into mixed voice and high-note techniques, providing science-based methods to control vocal ratio and sing high notes relaxedly, helping Asian students abandon the common practice of "shouting for high notes." Further, it guides line-by-line polishing of song sections (verse, pre-chorus, chorus, and finale), teaching how to align vocal techniques with English lyric emotions—an area where non-native singers often struggle. The accompanying 21-day phased plan breaks daily practice into warm-up, core exercises, and self-assessment, ensuring practicality and adaptability for learners at all levels (beginners, advanced singers, and vocal exam candidates). The final chapters cover stage performance mindset adjustment, emotional expression, and troubleshooting common issues, forming a complete closed-loop of "technique + language + emotion + practice." Beyond mastering "I Have Nothing," this book equips Asian non-English native students with universal methods for singing English power ballads, enabling them to transcend linguistic limitations and deliver authentic, touching performances that connect deeply with audiences.