1. The orthodox position of Lu. From the distance, Lu was the vassal of his younger brother, and Qi was the earliest vassal of Jiang Ziya, the founding hero, so Lu was closer. Later, Qi has become Tian Qi, which is even more alienated for the Zhou Dynasty.

2. Cultural reasons: Shandong is the birthplace of Confucian culture. The founders of Confucianism are Confucius in Qufu and Mencius in Zoucheng, as well as Mozi in Tengzhou, the founder of Mohism, and the grandson of a military strategist. They were all born in today's Shandong. As a sage of Confucianism, Confucius was born and lived mainly in Shandong, and his theory had a great influence on China's later generations.

3. Social reasons: Lu was the only vassal state in the Spring and Autumn Period that could use the same etiquette as Zhou. Lu is more complete than Zhou Li, and people say that "Zhou Li is all in Lu".

Shandong province, at first, mainly refers to Xiaoshan, Huashan or the vast area of the Yellow River basin east of Taihang Mountain. In the eighth year of Jin Dading (1 168), Shandong East Road and Shandong West Road were established, and Shandong East Road was set as the military department. "Shandong" is the name of the administrative region. "Shandong" became the proper name of this province in the Ming and Qing Dynasties. The representative culture of Shandong history is Qilu culture.

The topography of Shandong Province is dominated by hills and hills, with hills protruding in the south-central part, low-lying and flat terrain in the southwest and northwest, Shandong Peninsula with gentle hills in the east and North China Plain in the west and north. It spans five major water systems: Huaihe River, Yellow River, Haihe River, Xiaoqing River and Jiaodong. It belongs to warm temperate monsoon climate.

Shandong province is a big industrial province and industrial base, with 4 1 industrial categories. It is an important industrial base in China and a strategic fulcrum for economic development in the northern region. Shandong Peninsula Urban Agglomeration is adjacent to Japan and South Korea, facing Northeast Asia and connecting the Belt and Road Initiative.

Shandong climate:

Shandong's climate belongs to warm temperate monsoon climate type. Precipitation is concentrated, rain and heat are in the same season, spring and autumn are short, winter and summer are long. The annual average temperature is 1 1℃- 14℃, and the regional difference of temperature in Shandong province is greater than that in the north and south. The frost-free period of the whole year increases from the northeast coast to the southwest, with 180 days in northern Shandong and Jiaodong and 220 days in southwestern Shandong.

Shandong province is rich in light resources, with an average light of 2290-2890 hours, and the heat condition can meet the needs of double cropping of crops a year. The average annual precipitation is generally between 550-950 mm, decreasing from southeast to northwest. The seasonal distribution of precipitation is very uneven. 60%-70% of the annual precipitation is concentrated in summer, and it is prone to waterlogging and drought in winter, spring and late autumn, which has the greatest impact on agricultural production.