This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well. Just note that せつ gets shortened to せっ just like many つs do in this situation.
I put out the hina dolls because the Girl's Festival is just around the corner.
Can you name all five seasonal festivals?
Japan's day for boys, called "Boy's Day," would be incomplete without the carp-shaped streamers known as "koi nobori."