Tri Apirum or Thep Chumsai Na Ayutthaya (5 January 1930), National Artist, Literature Art of the year 2019, a writer of mystery, horror and fantasy novels, such as Kaew Khan Lek, Jom Makin, Naga, Doll Factory, Thepabhut Sud Weha.

        The word "Tri Apirum" means "three-tiered state umbrella" as his surname.

        Thep Chumsai Na Ayutthaya began as a writer of horror mystery novels, drawing inspiration from mysterious stories told by adults in the palace, and has been a reader since childhood, as there are many books at home.

        Mr. Thep also writes romance novels as Thep Thewi, and has published over 100 works under both names.

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Story and illustrations: Ratchanok Thongkhaokham