This is an off-topic post continuing in an occasional series on Chinese character esoterica.
As an engineer, I am a bit obsessed with the structures and patterns of individual Chinese characters.
Recently (don't ask how), I stumbled upon the character 噩, and it got me thinking about symmetry within characters. Specifically, how many characters out there are symmetric across both the x and y-axes? Here are the ones I could think of:
I'm sure there's more out there; anyone think of any?
Lastly, this exercise reminds me of a Chinese character riddle a colleague once shared with me: starting from 日, by adding one stroke, you can make 9 different characters. Can you think of them all?