He feared that such a policy would be unpopular in the border states.
Child labor is alot cheaper than paying an adult a living wage. Often the children working these jobs don't have the luxury of saying no to these jobs that pay maybe a dollar an hour.
The shang dynasty made many contributions to chinese civilization but four in particular define the dynasty: the invention of writing, the development of a stratified government, the advancement of bronze technology, and the use of the chariot and bronze weapons in warfare.