The legendary fruit that grants immortality in Chinese mythology is the Peach of Immortality. This mythical fruit is often associated with the goddess Xi Wangmu, the Queen Mother of the West, who cultivates the peaches in her heavenly garden. Consuming the fruit is believed to confer eternal life and prevent aging. The tale of the Peach of Immortality is celebrated during the Lantern Festival, symbolizing the desires for longevity and the eternal nature of the soul in Chinese culture.