This is a shakuhachi. It's classical Japanese bamboo flute.

这是尺八。这是经典的日本竹笛。

The air was heavy with the scent of incense, and the sound of a bamboo flute drifted through the open door.

空气中弥漫着沉甸甸的熏香，敞开的门外传来竹笛声。

Moreover, the sound of bamboo, whether it's the rustling of leaves in the wind or the melodious notes from bamboo flutes, forms an essential part of the Chinese aesthetic concept, evoking a sense of tranquility and harmony with nature.

此外，竹子的声音，无论是树叶在风中的沙沙声，还是竹笛的悠扬音符，都构成了中国美学概念的重要组成部分，唤起了一种宁静与自然和谐的感觉。