<p>➀ The author reflects on his first year in the RF industry, feeling lost and aimless, and his struggle to learn and adapt.</p><p>➁ After the second year, he decides to change his job and starts working in a射频 company, improving his skills and finding direction.</p><p>➂ He transitions to the whole machine industry and aims to become a RF leader, working hard and achieving his goal.</p><p>➃ After becoming a RF leader, he faces another period of confusion and seeks to deepen his understanding of product design and communication protocols.</p><p>➄ He continues learning and eventually finds his next career goal — becoming a product director or technical director.</p><p>➅ The author emphasizes the importance of hard work and learning, leaving the rest to destiny.</p>