The lowest temperature in the northern cold season is -4 1℃, and the highest temperature in the southern summer is 45℃. The terrain is high in the north and low in the south, and the relative height difference is rare in the world. Most of them are hilly areas, and the land above 1 km accounts for half of the country's total area. Nepal is surrounded by mountains in the east, west and north, so it has been called "mountain country" since ancient times. There are many rivers and rapids. It flows south into the Ganges River in India. The southern part is an alluvial plain with fertile soil, dense forests and vast grasslands, which is an important economic zone in Nepal. The central valley is hilly, and the capital Kathmandu is located in the Kathmandu Valley. The majestic Himalayas block the cold and dry wind in the north, with pleasant climate and beautiful scenery. The northern mountainous areas are shrouded in mist and snow all year round. Due to the complex terrain, grazing can only be carried out in summer. The climate in China varies from place to place. The country is divided into three climatic zones: northern mountainous area, central temperate zone and southern subtropical zone. The lowest temperature in the northern cold season is -4 1℃, and the highest temperature in the southern summer is 45℃. At the same time, in China, when the southern plains are extremely hot, the capital Kathmandu and Pakra Valley are full of flowers and spring, while the northern mountainous areas are snowy in winter.