Zcash (ZEC) is a privacy-focused cryptocurrency that uses zero-knowledge proof technology to enable hidden transaction information. Compared to BTC, it emphasizes anonymity more and is suitable for users with privacy needs. Market-wise, it usually follows the overall market fluctuations, but tends to surge during privacy concept hype. The risk lies in significant regulatory pressure, reduced exchange support, and unstable liquidity. Overall, it is suitable for short-term or swing trading, and long-term holding with heavy positions is not recommended.