Blueberries represent the only thing, and the meaning of blueberries is very beautiful. Generally, if boys send blueberries to girls, it implies that love is sour and sweet. Brown's fruit is very sweet, the skin is slightly sour, and it is also very loving. What they mean is that they want to be together forever, live a sour and sweet life and never give up.

Brown, also known as Black Plum, Black May and Black Bulun, has a fruit diameter of about 4 cm, dark color, deep purple, sweet fruit taste and slightly sour skin. Brown comes from America, New Zealand and other places. After introduction, it has been planted in the south of the Yangtze River and parts of Taiwan Province Province. Whether it is eaten as fruit or made into jam or dessert, it is very good.