Furthermore, Wang used his treatise as a means to spread knowledge in support of certain agricultural practices or technologies found exclusively in either South or North that could benefit the other, if only they were more widely known, such as the southern hand-harrow used for weeding in the south, yet virtually unknown in the north.
Furthermore, Wang used his treatise as a means to spread knowledge in support of certain agricultural practices or technologies found exclusively in either South or North that could benefit the other, if only they were more widely known, such as the southern hand-harrow used for weeding in the south, yet virtually unknown in the north.