What grade does Shanghai market belong to in Shanghai?

Shanghai Siheyuan is the benchmark work of Shanghai Taihe Siheyuan Department. The Xinjiangwan plate, which occupies the core of the North Central District of the city, has an ecological protection zone in the city center, adjacent to the Wujiaochang business district, surrounded by first-class tertiary hospitals, immersed in a century-old humanities school, and enjoys a 2200-mu park cluster in Xinjiangwan privately, with natural urban green lungs. It is a real collection-level high-grade villa in the urban courtyard.