In 1881, Yunnan salt merchants pooled their capital to build the Yanlong Ancestral Hall at the intersection of Tuodong Road and Baita Road. This corner of Kunming was once so crowded with salt businesses that locals called it Salt Merchant Street. The merchants built this hall as a trade headquarters and a sanctuary to worship the Three Emperor Patriarchs—Xuanyuan Yellow Emperor, Fuxi, and Shennong. Today, it stands as part of the Zhenqing Guan Ancient Building Group, the largest preserved Ming and Qing dynasty architectural complex in the city center.

Step into the courtyard, where the crimson petals of a native Yunnan camellia tree of the "Tongzimian," or baby face, variety grow near a century-old well. The main hall rises with a timber-earth structure, smelling of aged pine and dry clay, under a double-eaved hip-and-gable roof clad in yellow and green glazed tiles. On the upper floor, a corridor leads to a flower hall known as the Tianxu Pavilion. The external paintwork still gleams with gold leaf, and visitors can trace the deep-cut grooves of the twenty-four filial piety relief panels lining the walls.

The courtyard's centerpiece is the ancient theater stage, built in a style influenced by Jiangnan architecture. Woodcarvers decorated its architraves with auspicious motifs, including twin dragons playing with a pearl and deers and cranes in springtime. Overhead, an ornate wood-carved caisson hangs, supported by bracket sets.

After decades of wear, when state enterprises and local residents occupied the space, a major restoration from 2001 to 2003 revived the hall. Workers repaired the structures to preserve their original appearance. Today, the stage is active again. Audiences gather in the courtyard to watch Yunnan-dialect dramas like Qian Nanyuan, where the sounds of traditional Dian opera blend with modern theater under the historic eaves.