Nobody can point to the exact year the Vietnamese diều sáo — the whistling kite — first flew. What survives instead is a trail of legends, temple festivals and old texts, each pushing the tradition back further than the last.
At Sáo Đền, in what is now Thái Bình province, a kite-flying custom tied to the worship of Queen Mother Ngô Thị Ngọc Giao is already established — evidence, to historians who study it, that whistling kites were a widespread part of Vietnamese village life well before written records give the practice much attention.
Kites appear in the woodblock prints of Đông Hồ village, Bắc Ninh — visual evidence that the shapes and imagery of kite-flying were already familiar enough to Vietnamese villagers to be worth printing and selling as folk art.
In Bá Dương Nội village, on the banks of the Red River northwest of Hà Nội, villagers trace their kite-flying custom to General Nguyễn Cả, an official of the Đinh dynasty who retired to the village, taught farming and animal husbandry, and founded a kite festival among several other local traditions; see Three villages, three traditions, below.
Scholar Lê Quý Đôn writes about paper kites in his encyclopedic Vân Đài Loại Ngữ, attributing the invention of the paper kite to the Chinese general Hàn Tín and describing a folk belief that flying kites for children to gaze up at helps release excess heat from a child's body — the earliest detailed written account of kite culture in Vietnam.
A formal kite-flying club is established in Bá Dương Nội to organize and pass on the village's whistle-making techniques, later handing leadership to a younger generation of members.
Bá Dương Nội kites and their whistles travel abroad, flown at kite festivals in France and Japan; in 2025, the Bá Dương Nội kite-flying festival is formally recognized as a national intangible cultural heritage, and the village's kite-making craft is registered as an official traditional trade.