renaming of the famous harbor of Visakhapattanam in Andhra Pradesh as Kulottungacolapattanam also indicates his interest in trade with foreign countries across the Bay of Bengal. In 1077 CE, king Chulien (Chola) Ti-hua-kialo sent an embassy to Chinese court for promoting trade. Sastri identifies this Chola ruler with Kulottunga. This trading venture seems to have ended profitably for the Cholas and they returned with over 81,000 strings of copper cash and many more valuables. The Khmer king Suryavarman II, builder of the famous Angkor Wat, sent a mission to the Chola dynasty and presented a precious stone to Kulottunga in 1114 CE. According to Burmese accounts, Kyanzittha, the ruler of Pagan (Burma) met with the Chola royal family by sending an ambassador to the Chola emperor. In an inscription in Pagan, he even claims to have converted the Chola to Buddhism through a personal letter written on gold foils. There is also evidence to suggest that Kulottunga, in his youth (1063 CE), was in Sri Vijaya, restoring order and maintaining Chola influence in that area. Virarajendra Chola states in his inscription, dated in the 7th year of his reign, that he conquered Kadaram and gave it back to its king who came and worshiped his feet. These expeditions were led by Kulottunga to help the Sailendra king who had sought the help of Virarajendra Chola. An inscription of Canton mentions Ti-hua-kialo as the ruler of Sri Vijaya. According to historians, this ruler is the same as the Chola ruler Ti-hua-kialo (identified with Kulottunga) mentioned in the Song annals and who sent an embassy to China. According to Tan Yeok Song, the editor of the Sri Vijayan inscription of Canton, Kulottunga stayed in Kadaram after the naval expedition of 1067 CE and reinstalled its king before returning to South India and ascending the throne. Trade relations and cultural contacts established during the reigns of Rajaraja Chola I and Rajendra Chola I were actively maintained by Kulottunga and his successors. In 1089 CE, the ruler of Sri Vijaya sent two ambassadors to Kulottunga's court, requesting him to renew the old grants to the Buddhist monastery (Chulamani Vihara) in Nagapattinam that was built during the period of Rajaraja Chola I. Extent of the empire The Chola kingdom remained formidable under Kulottunga in his 45th regnal year (c. 1115 CE). Except for the loose hold over Lanka, the rest of the empire remained intact.