Lushi chicken is green when laying eggs, because it is rich in trace elements such as zinc and selenium, so the eggshell is green. Among the nearly 1,000 varieties of Chai chicken in China, only three varieties can produce green shell eggs in batches. The first kind: Jiangxi black-bone chicken (black-bone chicken), and the second kind: Henan Lushi chicken (one of the three famous chickens in Henan), which is a national geographical indication product. It is an ancient chicken breed, suitable for mountain stocking. The third kind, Hubei Three Gorges black-bone chicken.

As far as I know, Lushi chicken has a high proportion of green shell eggs, and the contents of cephalin, lecithin and DHA are much higher than those of ordinary free-range eggs, which has a good promotion effect on brain development and memory enhancement. It has the characteristics of "three highs and one low", that is, high selenium, high zinc, high iodine and low cholesterol, so it is known as "ginseng in the egg".