People would paint some flowers on the boiled eggs with rubia cordifolia juice. Several days later, when the shell is stripped, lovely, delicate patterns will be seen on the egg white.

鸡蛋煮熟后，用茜草汁在蛋壳上描绘花卉，几天后就渗进蛋壳，再把壳剥去，蛋白上便会显现可爱的图案，十分别致。