Question : What was a major policy shift in China's post-Mao era?
Option 1: Reintroduction of the Cultural Revolution
Option 2: Emphasis on heavy industry
Option 3: Adoption of socialist principles
Option 4: Opening up to foreign investment
Correct Answer: Opening up to foreign investment
Solution : A major policy shift in China's post-Mao era was the opening up of the economy to foreign investment, which was a departure from the earlier closed and centrally planned economic system.