Orange producing area

Oranges originated in China and have been cultivated for thousands of years. They were not introduced to Portugal until 1471 and to the United States only in 1665. In China, it starts from Taiwan Province in the east, the Yarlung Zangbo Grand Canyon in Xizang in the west, Sanya City in Hainan Province in the south, and Shanxi Province, Gansu Province and Henan Province in the north, but its economic cultivation areas are mainly concentrated in latitude 20 °~ 33 °N, below 700-1000m above sea level.

Orange is a fruit of the genus Citrus in the Rutaceae, the fruit is usually flat to subglobular; the pericarp is very thin and smooth, or thick and rough, the color of the fruit is yellowish, scarlet or crimson, and the pericarp is easy or slightly easy to peel off; 7-14 peel, the pulp is sour or sweet, or has another peculiar smell, the seeds are more or less.

The orange is covered with treasures all over the body, and the meat has the effects of appetizing and regulating qi, relieving thirst and moistening the lungs; the skin has the effects of rational qi dryness and dampness, resolving phlegm and relieving cough, invigorating the spleen and stomach; the reticular meridians on the flesh have the effects of dredging collaterals and resolving phlegm, regulating qi and activating blood circulation; leaves have the effects of soothing the liver and regulating qi, swelling and toxin; core has the effects of dispelling knots, regulating qi and relieving pain.