毗湿奴 (Vishnu) is a major deity in Hinduism, known as the preserver and protector of the universe. He is part of the Hindu trinity, which includes 梵天 (Brahma) the creator and 湿婆 (Shiva) the destroyer. Vishnu is often depicted with blue skin and four arms, holding a conch shell, discus, mace, and lotus flower. Vishnu is believed to incarnate in various forms, known as 化身 (avatars), to restore cosmic order. The most famous avatars include 拉玛 (Rama) and 克里希那 (Krishna). Devotees worship Vishnu for his compassion and guidance in overcoming life's challenges.