1, there is no abbreviation in Shandong Province, only "Shanghai", which is the abbreviation of Shanghai.

2. Shanghai, referred to as "Shanghai" for short, is a provincial administrative region, a municipality directly under the Central Government, a national central city, a megacity and the core city of Shanghai metropolitan area in People's Republic of China (PRC). Shanghai is located in the east of China, at the mouth of the Yangtze River, bordering the East China Sea in the east and Jiangsu and Zhejiang provinces in the northwest.