The correct answer to this open question is the following.
Unfortunately, you did not attach the descriptions and the categories. SO we do not know what they are.
However, trying to help you, we can comment on the following general terms.
It is true that China experienced a great deal of change under Mao Zedong and after his death. These were the main changes experienced in China.
One of the most important changes was in the Chinese economy. A change of 180 grades in the economy supported the arrival of the foreign investor to improve the economic conditions of the country. There was also a period of political turmoil. Mao's successor, Hua Guofeng had to arrest Jiang Qing of the Gang of four, who was his bitter rival to calm things down in the Chinese political arena.
From then on, China started to invest in projects, welcomed private capital, and gave some liberties to its millions of people. This was the foundation of a solid nation that today is considered to be the most powerful country in the world.
