Neijiang rose from the fields of Sichuan as a center for sugar, eventually earning the name Sweet City. In the late 1980s and early 1990s, this industrial identity took physical form in the Tiancheng Building. It stood in the old city center, a multi-story landmark of a changing era.

The building emerged alongside the Neijiang Department Store—then the tallest structure in southern Sichuan—and the Wujiaohua Building. Together, these structures formed the primary commercial core of the city. Access to the building required navigating the narrow passage of Egg Market Alley. This path connected the traditional, ground-level trade of merchants selling daily goods to the modern aspirations of the high-rise.

On the 19th floor, visitors encountered a sensation later described on social media as a walk in the clouds. From this height, the city appeared transformed, offering a perspective far above the noise of the bustling streets below. The building’s construction utilized the architectural language of the late 20th century, using concrete to project a sense of permanence and growth.

Today, the original Tiancheng Building exists in a state of quiet ambiguity. Its current physical condition is undocumented in modern records, and its windows may no longer reflect the sun over the old district. However, the name serves as a memory of the city's economic roots. The 19th-floor views and the echoes of trade in Egg Market Alley remind us of a period when Neijiang looked upward, shifting its focus from the sweetness of the earth to the heights of urban life.