There was also intercourse between Sukhothai and Ceylon in the realm of religion. A number of Thais entered the monkhood in Ceylon and brought back that country 's sect of Buddhism. The Phra Buddhasihing Buddha image was also obtained from Ceylon.
It is therefore apparent that King Ramkhamhaeng 's diplomatic pursuits contributed to the progress of the Thai Kingdom, not only in terms of foreign relations but also in the area of religion (with Ceylon) and trade (with China).