Russian black fruit is not Lao Li. The full name of Russian black fruit should be "Sorbus nigricans", and the English name is "Aronia melanocarpa Elliott", which is usually called "Aronia" abroad. Russian black fruit grows in Siberia in the far east of Russia, where the climate is colder than other regions. Due to the particularity of the growing environment, this black fruit contains very high nutritional value (click to view details). Moreover, although this black fruit tastes sweet and sour and contains some sugar, it is a special kind of fructose. This fructose has a low glycemic index and will be directly absorbed and digested by the human body after entering the small intestine, so it will not be absorbed by the human body regardless of the function of islet.