The so-called "live beads" are chicken embryos that are hatching from healthy eggs in non-epidemic areas to 12 to 13 (the average incubation period of chickens is 2 1 day). Because this embryo looks like a pearl in the light, it is called a "living bead".

Chicken is a kind of poultry. Domestic chicken comes from wild original chicken, and its domestication history is at least about 4000 years, but it was not until around 1800 that chicken and eggs became mass-produced commodities. The types of chickens are turkey, black-bone chicken, pheasant and so on.