复活节快乐 - Fùhuójié kuàilè!
With this pinyin sudoku ("hua") on an (easter) eggshell, I want to wish everybody a Happy Easter.
I you are interested in the technique used, a great explication with pictures can be found here (click "Reserviertechnik"): http://www.sorbische-ostereier.de/t_frset.htm (in German). If you don't read German, here is a short version: Apply hot wax with the help of needles (or feather tips cut to triangles etc.), to the egg, then dye it in a light colour. If you like more colours on the egg, repeat the procedure with more wax and ever darker colours. At the end, take off the wax carefully over a flame.