Which fruit is in the picture?

Myrica rubra, also called Chinese bayberry, yangmei, Japanese bayberry, red bayberry, yumberry, waxberry, or Chinese strawberry (and often mistranslated from Chinese as arbutus) is a subtropical tree grown for its sweet, crimson to dark purple-red, fruit.

It is a small to medium-sized evergreen tree growing up to 10–20 m (33–66 ft) high, with smooth gray bark and a uniform spherical to the hemispherical crown. It is dioecious, with separate male and female plants. It tolerates poor acidic soils. The root system is 5–60 cm (2.0–23.6 in) deep, with no obvious taproot.

The fruit is spherical, 1.5–2.5 cm (0.59–0.98 in) in diameter, with a knobby surface. The surface color is typically a deep, brilliant red, but may vary from white to purple. The flesh color is similar to surface color, or somewhat lighter. The flesh is sweet and very tart. At the center is a single seed, with a diameter about half that of the whole fruit.