You are talking about Gynostemma pentaphyllum, a perennial herb vine, also known as Paradise Grass, Gospel Grass, Super Ginseng, Gongluo Pot Bottom, Rooting Everywhere, Radix Astragali, American Ginseng and so on. In Japan, it is called Ganman Tea. Gynostemma pentaphyllum likes humid and mild climate, and it is mostly wild in the shade of forests and streams. It is a perennial climbing herb. In China, it is mainly distributed in Pingli, Shaanxi, Kangxian, Gansu, Hunan, Hubei, Yunnan, Guangxi and other provinces, and is known as "Southern Ginseng". Gynostemma pentaphyllum, which grows in the south, has a high medicinal content and is called a magical "longevity herb" by the people. 1986, the state science and technology commission listed Gynostemma pentaphyllum as the first batch of "precious Chinese herbal medicines" to be developed in Spark Plan.