castrated some of their own children to become eunuchs to serve in the Ming imperial palace. The emperor said that the boys who were castrated were innocent and did not deserve castration, and he returned the boys to Ryukyu and instructed them not to send eunuchs again. In 1411, a smaller fleet, built in Jilin and commanded by another eunuch Yishiha, who was a Jurchen, sailed down the Sungari and Amur Rivers. The expedition established a Nurgan Regional Military Commission in the region, headquartered at the place the Chinese called Telin (特林; now the village of Tyr, Russia). The local Nivkh or Tungusic chiefs were granted ranks in the imperial administration. Yishiha's expeditions returned to the lower Amur several more times during the reigns of the Yongle and Xuande Emperors, the last one visiting the region in the 1430s. After the death of Timur, who intended to invade China, relations between the Ming Empire and Shakhrukh's state in Persia and Transoxania state considerably improved, and the states exchanged large official delegations on a number of occasions. Both the Ming Empire's envoy to Samarkand and Herat, Chen Cheng, and his counterpart, Ghiyasu'd-Din Naqqah, recorded detailed accounts of their visits to each other's states. One of the Yongle Emperor's consorts was a Jurchen princess, which resulted in many of the eunuchs serving him being of Jurchen origin, notably Yishiha. Due to Ming rule in Manchuria, Chinese cultural and religious influence such as Chinese New Year, the "Chinese god", Chinese motifs like the dragon, spirals, scrolls, and material goods like agriculture, husbandry, heating, iron cooking pots, silk, and cotton spread among the Amur natives like the Udeghes, Ulchis, and Nanais. After Manchuria under Yuan rule, Ainu and Nivkh of Sakhalin became tributaries to the Ming dynasty of China after Manchuria came under Ming rule as part of the Nurgan Regional Military Commission. Boluohe, Nanghar and Wuliehe were Yuan posts set up to receive tribute from the Ainu after their war with the Yuan ended in 1308. Ming Chinese outposts in Sakhalin and the Amur river area received animal skin tribute from Ainu on Sakhalin, Uilta and Nivkh in the 15th century after the Tyr based Yongning Temple was set up along with the Nurkan (Nurgan) outposts by the Yongle emperor in 1409. The Ming also held the post at Wuliehe and received marten pelt fur tribute from the assistant commander Alige in 1431