Tianjin is one of the four municipalities directly under the Central Government of China. It's located in the northeastern part of the country, adjacent to the Bohai Sea. Tianjin is among the most developed cities in China and is recognized for its rich cultural heritage and modern dynamism. It plays an important role in the country's economy, transportation, and culture. From the ancient period, Tianjin has been a crucial trading port, and it continues to influence other cities globally with its unique blend of traditional and modern architecture, including the Tianjin Eye, Ancient Culture Street, Italian Style Street, and the Porcelain House.

According to the 2020 census, Tianjin had a population of about 15,621,200. Tianjin is known for being a diverse city, with a mix of people from different ethnic backgrounds. As per the data collected during the 2010 census, 97.33% of the population identified themselves as Han Chinese, while the remaining 2.67% belonged to different ethnic minorities. As one of the most important global trade and finance centers, Tianjin houses millions of residents, who collectively speak over 100 languages including Mandarin, English, Japanese, and Korean. Tianjin is also known for its unique historical relics, such as the Dule Temple, the Tianjin Ancient Culture Street, and the Five Great Avenues. The Porcelain House, a unique architectural marvel, is often considered as the symbol of this modern yet traditional city.

Tianjin is one of the four municipalities in China that are administered directly by the central government. The Tianjin Municipal People's Government is the main administrative body, headed by the mayor, who has executive powers. The government consists of numerous bureaus responsible for various sectors such as health, education, finance, and public security. Besides, there are 16 districts under the municipality, each with its local administrative body, responsible for local planning, social services, local roads, and waste management.

Tianjin is a significant economic powerhouse in China. It has a robust and diverse economy, with major industries including manufacturing, petroleum, and metallurgy. The city's GDP in 2020 was about ¥1.41 trillion (about $220 billion), contributing significantly to the country's overall economy. It is also one of the largest port cities in the world, handling millions of tons of cargo annually. Tianjin Free Trade Zone and Tianjin Port play crucial roles in boosting the city's economy.

Tianjin has made significant strides in infrastructure development, with the Tianjin Urban Master Plan aiming to transform the city into a world-class metropolis by 2050. The plan identifies key infrastructure priorities, including new energy, water and sewerage infrastructure, digital connectivity, and new transportation schemes. The implementation of the Binhai New Area and the Sino-Singapore Tianjin Eco-city projects exemplifies the city's commitment to sustainable urban development.