Return it. Dried day lily is rich in colchicine, which will be oxidized in human body if ingested directly, resulting in harmful colchicine, which will seriously damage human gastrointestinal tract and urinary system. When making dried daylily, after soaking the dried daylily, there is a residue of narcissin, so it is necessary to blanch the dried daylily again and then cook it. The blanching time is generally 1~2 minutes, and too long time will affect the taste of day lily.