在準備米通瓷這個小系列時，我一直納悶瓷器上的「工」紋究竟代表甚麼。民間瓷器的研究和收藏本就是個冷門，考究當中紋飾的網上資料更是寥寥可數。中文資料都一律以「工字紋」稱之，外文資料有人估計是易經中的卦紋。參考紋樣書籍和晚清的一些青花民用瓷，我估計這「工字紋」其實是工霞紋的圖案化結果，以方便當年大規模生產。工霞紋，即畫成工字型的雲霞，歷史上一直都有在不同的器物上出現。附圖來自網上，可見這一個晚清青花玲瓏瓷杯，邊上的地方畫了一個又一個的工霞紋，而蝙蝠就在雲間發舞，紋樣的組合與後來批量生產的米通瓷完全一樣。只不過，米通瓷上這些紋飾都被圖案化了，相隔許多年後，人們都已經不知道它的原來面目，而只記得「工字紋」了。

幾何形態的傳統花紐並不多，所以特別用工霞紋拼合了這兩個款式。幾何形態的花紐尺寸拿捏要相當準確，否則很容易會「走樣」。用那對「小風車」做教材，學生應該會叫苦連天。

While I was preparing this rice grain porcelain mini series, I was wondering what this H-shape or I-shape pattern meant. Not much information could be found online, someone guesses this pattern is related to I Ching. After checking some pattern books and photos of some old rice grain porcelain (like the attached photo that I found online), I guess the pattern originally could be the clouds drawn in I-shape, and the bats are flying on the sky between these clouds. Then later on, to make it easier for mass production, this cloud pattern is turned into the I-shape pattern that we see today, and after years nobody remember how it looked originally.