After the 18 August rally, the Cultural Revolution Group directed the Red Guards to attack the 'Four Olds' of Chinese society (iold customs, old culture, old habits, and old . For the rest of the year, Red Guards marched across China in a campaign to eradicate the 'Four Olds'.
Pretty much nothing was gained for the Americans except for riots and death.
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Hope I helped, and good luck!
Assuming that this is referring to the same list of options that was posted before with this question, the correct response would be that they combined the agricultural output of the South with the mercantilist mindset of the North, although it should be noted that the South was more agricultural.
This was however obtained by a user named HistoryGuy, this question was also already answered.