The Ministry of Agriculture and Rural Affairs in China inspected 14 provinces' major silkworm cocoon producing areas in 2020 and found that the quality of the original mulberry silkworm species and first-generation hybrids met requirements. The inspection also highlighted the need to improve supervision of silkworm eggs, increase quality inspection, and enhance the production level of silkworm eggs. The ministry emphasized the importance of managing mulberry trees, preventing and controlling pests and diseases, and improving breeding and seed production techniques.