The detailed information of five longan, litchi and mango in the first volume of the sixth grade of Jiangsu Education Edition is required today, otherwise I will close the question.

evergreen trees, usually less than 1m in height, sometimes up to 15m or more, with gray-black bark; Branchlets are cylindrical, maroon, and densely white lenticels. The leaf stalk is 1~25 cm long or over; Leaflets 2 or 3 pairs, less than 4 pairs, thin leathery or leathery, lanceolate or ovate-lanceolate, sometimes elliptic-lanceolate, 6-15 cm long and 2-4 cm wide, with a sharp tip or a short tail-shaped tapering, all around, dark green ventral surface, glossy, green back flour and hairless on both sides; Lateral veins are often slender, not obvious on the ventral surface, obvious or slightly convex on the dorsal surface; Petiole is 7~8 mm long. Inflorescence terminal, broad and multi-branched; Pedicel slender, 2~4 mm long, sometimes thick and short; Calyx covered with golden yellow short villi; Stamens 6~7, sometimes 8, filaments about 4 mm long; The ovary is densely covered with small tumors and bristles. Fruit ovoid to nearly spherical, 2~3.5 cm long, usually dark red to bright red when mature; The seeds are all wrapped by fleshy aril. Flowering in spring and fruiting in summer.

Litchi is rich in sugar, which can supplement energy and increase nutrition. Studies have proved that Litchi can nourish the brain tissue of Litchi diet, and can obviously improve insomnia, forgetfulness, mental fatigue and other symptoms. Litchi meat is rich in vitamin C and protein, which helps to enhance the immune function and improve the disease resistance. Litchi has the functions of detumescence, detoxification, hemostasis and pain relief; Litchi is rich in vitamins, which can promote blood circulation of tiny blood vessels, prevent freckles and make skin smoother. The pulp has the effects of invigorating spleen and liver, regulating qi and blood, warming middle warmer and relieving pain, and nourishing heart and tranquilizing mind. The nucleus has the effects of regulating qi, dispersing stagnation and relieving pain; It can stop hiccups and diarrhea, which is intractable hiccups and diarrhea. The history of litchi cultivation can be traced back to the period of Emperor Wu of the Han Dynasty. Because of its excellent flavor, it was deeply loved, and litchi cultivation was listed as a tribute in the Tang Dynasty or earlier. There are also many special articles or books describing litchi in the past dynasties, and more than 1 species have been recorded. Only six species have been transcribed in Wu Qijun's book "Textual Research on Plant Names and Facts". Cai Xiang's litchi spectrum and Wu Yingkui's Lingnan litchi spectrum are both representative and comprehensive litchi monographs, which describe in detail the historical data, origin, varieties, planting, pests, phenology, processing and consumption of litchi. Cai's works focus on Fujian's materials, while Wu's works are based on Guangdong's experience and famous products, so each has its own characteristics. [2] In the 3rd century AD, Wu Lu written by Zhang Bo recorded that "there are many lychees in Cangwu, which were born in the mountains and planted by others". Cangwu is in today's Guangxi. Also contained in Miscellanies of Xijing, when Liu Bang proclaimed himself emperor in the 2nd century BC, Zhao Tuo, the captain of the South China Sea, served litchi. Litchi was recorded as a Lingnan product in the Records of the People in the 1st century and Guangzhi in the 3rd century. It can be seen that litchi has been planted and produced in southern China for 2, years. Historical records such as Huayang Guozhi recorded that litchi was rich in Yibin area as early as Qin and Han Dynasties, and Geography of New Tang Dynasty also recorded litchi fried in Yibin Tugong. Cai Xiang's litchi spectrum is the earliest litchi monograph in China. "Biography of Yang Guifei" talks about that after Yang Guifei was hanged, it happened that the litchi paid tribute to Guangzhou arrived, which was used by Emperor Xuanzong of the Tang Dynasty as a good food for your diet, and at the same time, it had the function of nourishing the brain and strengthening the appetite. Litchi

was produced in the southwest, south and southeast of China, Guangdong, Guangxi, Fujian, Sichuan, Taiwan Province and Yunnan, especially in Guangdong and southern Fujian. It is also cultivated in southeast Asia, and it has been introduced to Africa, America and Oceania. [2] Latitude ranges from 18 N to 28 N.. It is also cultivated in many countries outside China, and litchi was introduced to India around the 1th century. In the 17th century, it was introduced to many countries such as Vietnam, Malaysia Peninsula and Myanmar. The countries that introduced litchi planting include Florida and California, Queensland, India, South Africa, Madagascar, Israel and Mexico. [3] Litchi is a famous fruit tree with a long history of cultivation in southern China. It is generally recognized that its origin is in tropical and subtropical areas in southern China. It has the effect of promoting appetite in tropical forests inaccessible to people in Hainan and Yunnan.