This time , the Burmese king received the imperial envoys but still refused to submit . ( The Burmese chronicles say that the king was so insulted that he had the envoys executed . But both Burmese inscriptional evidence and Yuan records indicate that the envoys were not executed . ) At any rate , the imperial envoys did not get back to Yunnan in due time . The newly formed Yunnan government sent another delegation to investigate the whereabouts of the delegation , but the delegation could not reach Pagan because of an ongoing rebellion en route .