These ornaments were made using the very unique but not well known Korean traditional weaving technique which is called 'Noyeokgae'.
'Noyeokgae' means a string made by cutting long and twisting paper called 'Hanji'. It is more well known as 'Jiseung' to the public than the pure Korean word, 'Noweokgae'.
Jiseung craft is a Korean traditional craft technique that originated in the days when paper was scarce, when scholars cut long and twist the paper of their books they had finished studying, and then wove into single and double strings to make various objects.