明成祖
The Chinese court's attitude became more disdainful and negative towards the Oirats. The Yongle Emperor denied the Oirats chieftain Mahmud's request for the bestowal of rewards to his followers who had fought against Bunyashiri and Arughtai. Mahmud soon became angered by the Ming court's disregard towards him. He imprisoned the Ming envoys who had arrived from China, so the Yongle Emperor sent the eunuch envoy Hai T'ung in an unsuccessful attempt to secure their release.