A system of reeducation and penal reform involving physical labor for criminals in a prison camp setting; commonly abbreviated as [[劳改|勞改|lao2 gai3]].

alter the genetic characteristics of an organism using genetic engineering techniques; genetic modification (GM)

The process of upgrading national economy sectors or production processes using new technologies, equipment, and methods to improve efficiency, reduce waste, and enhance product quality.

the renovation and reconstruction of old city districts or dilapidated areas

the process of reforming or rehabilitating vagrants and displaced people