Emperor Taizong of Tang
The earliest "fengguan" discovered was the crown of Empress Xiao (Sui dynasty), unearthed from the Emperor Yang of Sui's tomb in 2013. The crown was made under the order of Emperor Taizong of Tang after the empress's death. The artifact was protect-repaired and studied in Shaanxi Provincial Cultural Heritage Administration; later, a replica was made based on the studies.