Many historians think it was imported from Indian numerals by Gautama Siddha in 718, but some Chinese scholars think it was created from the Chinese text space filler "□".
Mange historikere mener, at det var importeret fra Indiske tal af Gautama Siddha i 718, men nogle Kinesiske forskere mener, at det blev skabt af den Kinesiske tekst rum fyldstof "□".