The so-called "live bead" is a chicken embryo that has been incubated in a non-avian infected area, from a healthy breeder's egg up to the 12th to the 13th day of incubation (the average incubation period for chickens is 21 days). Because this embryo looks like a pearl under the light, so it is called "live beads".

The chicken is a domestic fowl, and the domestic chicken is derived from the wild Procapra, which has been domesticated for at least 4,000 years, but it was not until around 1800 that chicken meat and eggs became mass-produced commodities. Types of chickens include turkeys, crows and pheasants.