Different places in chinese forest frog have different names. People in Guangdong call it chinese forest frog, and people in Northeast China call it Rana Rana. chinese forest frog is a famous local product in Northeast China, especially chinese forest frog in Changbai Mountain. chinese forest frog is actually the oviduct of female toad. chinese forest frog is also called Rana Rana, Rana Rana Rana, Rana Hushi and Rana Rana Rana. Scientific name: China Rana chensinensis, an amphibian of Ranidae, is a precious frog species that grows in the hilly and cold gully region of Changbai Mountain in northeast China. It lives on forest wild fruits and insects, and hibernates in the bottom of glacier river for five months in winter. Because of its cold tolerance, it is named chinese forest frog, and its vitality is the highest in biology. The dried fallopian tubes of female chinese forest frog are commonly known as oviductus Ranae oil, oviductus Ranae oil and chinese forest frog oil, and are also called the four treasures of Changbai Mountain with bear's paw, Hericium erinaceus and Feilong. They have been used in China for thousands of years, and were listed as court tributes in the Ming and Qing Dynasties, and are known as "soft gold" and "animal ginseng" in medicine. Chinese forest frog is a treasure all over the body. According to modern scientific analysis, its main components are: protein content is as high as 51.1%-52.6% (protein content of chinese forest frog oil is as high as about 56%), fat is 4%, minerals are 4.7%, and it contains 18 kinds of amino acids, frog alcohol (bile alcohol), unsaturated fatty acids (linoleic acid, linolenic acid, etc.), nucleic acids, phospholipid compounds, and various vitamins (. Chinese forest frog is also rich in epidermal growth factor, which can promote cell division, make skin delicate and clear, and regenerate cells, and a small amount of natural hormones beneficial to human body, such as testosterone, estradiol, progesterone, etc. It has the unique effects of tonifying kidney, nourishing essence, moistening lung and nourishing yin, strengthening yang and strengthening body. It is a precious nourishing and strong product integrating food, medicine and tonic, and also a precious medicinal material with a long history. The magic of chinese forest frog lies in its unique growth environment and tenacious vitality. Zhong Yu's beautiful Changbai Mountain endows chinese forest frog with the essence of heaven and earth, and the cold natural environment in severe winter creates chinese forest frog with great vitality. Therefore, chinese forest frog is known as the "crown of vitality" in nature. Every autumn, it is the time for chinese forest frog to store energy for hibernation, and it is also the time for chinese forest frog to have the strongest vitality. Especially, the fallopian tubes (snow clam cream) of female chinese forest frog gather all the nutrients for breeding offspring in the coming year. At this time, chinese forest frog's nourishing function is unparalleled. As a matter of fact, the efficacy of chinese forest frog as a beauty tonic has been widely known. Its taste is salty, not dry and not hot, and it contains a lot of protein, amino acids, various trace elements and a small amount of hormones beneficial to human body, which is especially suitable as a daily tonic.