Without assuming symmetry and a lot of guess work and playing through mutiple solutions, no chance ao solving this puzzle.
It might be a great album cover, but not every image is suitable for a hanjie.
Still - thanks.

I am always surprised at "assuming symmetry" comments because if ALL numbers are symmetrical, then it is symmetrical. Nevertheless, I didn't use symmetry here but I had to guess the top right and left corners (which was quite easy). Maybe it could have been done using temporaries (I didn't try)

Unfortunately,more than 1 answer is correct.

Thank you for the puzzle! Most of the puzzle can be solved without assuming symmetry; just the last few squares are ambiguous.

Thanks.

The ending couldn't be done using temporaries only - I did try and there are at least 2 solutions. After finding first "incorrect though matching the numbers" I didn't care to find more, and luckily my first "symmetry attempt" was successful, but I wouldn't call it obvious. (Stating that "numbers are symmetrical therefore picture has to be symmetrical too" is far from truth, if by logic there can be another answer, as in here.)

Google the logo for a hint - easy then and a good hanjie u til the top two corners.

Just the last few were a slight issue - obvious symmetry. Thanks. Good image.