Based on what I learned in high school it's basically the idea that (1) in the same way that government control plays (and has to play) a role in capitalism, market can also be allowed to play a role in socialism (社会主义也有市场 "socialism also has markets"), especially since (2) socialism at its beginning stage needs development (发展才是硬道理 "development is the actual hard rule"), where market can be used to "unleash the productive forces" and improve the people's livelihoods.
Based on what I learned in high school it's basically the idea that (1) in the same way that government control plays (and has to play) a role in capitalism, market can also be allowed to play a role in socialism (社会主义也有市场 "socialism also has markets"), especially since (2) socialism at its beginning stage needs development (发展才是硬道理 "development is the actual hard rule"), where market can be used to "unleash the productive forces" and improve the people's livelihoods.
Chinese high school?
Yeah
Ah, okay that adds some context