During the Ming (1368-1644) and Qing (1644-1911) dynasties, the rise of Shanxi merchants made Taigu and Pingyao national financial centers. Pigeons were the fastest means of communication.

He said that gourds, bamboo and reeds were abundant in the Jinzhong area. Using locally sourced materials kept costs down and ensured the superior timbre of the whistles.

The creation of a single pigeon whistle involves over 10 meticulous steps, including cutting, hollowing, grinding, gluing and painting.

The polishing process demands repeated and precise work, until the surface is as smooth as a mirror. However, the carving of the sound chamber is where the real artistry lies.

"A pigeon whistle is like Shanxi opera — it's a folk instrument in itself," He said. The creation process is labor-intensive.

Each whistle takes two to three days to complete. Though almost weightless, the finished product can produce a sound that echoes across the sky.

Despite his exquisite craftsmanship and the intricate process, He maintains affordable prices, selling some of his creations for as little as 10 yuan ($1.47).

"I'm not doing this to make money," he said, "I want ordinary people to be able to afford them and appreciate them." He often offers discounts or repairs old whistles for free, especially for elderly or less fortunate enthusiasts.

Traveling to markets throughout Shanxi, his dedication and reputation are well-known. Many local seniors voluntarily help him promote and sell his pigeon whistles, driven by a desire to preserve this delightful old craft.

Guo Fengnian, 75, has been raising pigeons for over 60 years and is one of He's loyal customers. "You can't raise pigeons without pigeon whistles," he said. "I just love hearing that unique sound in the sky."