Thank you very much for your corrections! I tried to made the changes you suggested to me.

1) Analysts divide the Chinese capital invasion into three categories:
government financial investments,
investments by wealthy individuals and private equity, and corporate investments
2) China is trying to vary (diversify) the assets in portfolio through the purchase of European bonds.
This influx of money is the answer to the stability of the euro despite the crisis affecting Greece, Spain and Portugal.
3) By investing in foreign firms Chinese banks are trying (first) to internationalize Chinese firms, (second) to provide services to European firms in China, and third to empower their capability on the financial market.
4) According to the Ecomist journalist ..., democratization will fail to bear its fruit(s) in China though the total wealth of the country has increased (is increasing) overwhelmingly.
5) China is not likely to turn into a democracy because of its leading position as an oil-exporting country, its large land area and its tradition of very large party state.
6) One of the reasons for it political stability is due to its ability to carry out long-term stable political succession. Actually, the recruitment of new cadres has so far avoided (averted?) episodes of nepotism.

1. Analysts divide the Chinese capital invasion into three categories:

government financial investments, investments by wealthy individuals and private equity, and corporate investments.

2. Chinese investors are trying to diversify the assets in their portfolios through the purchase of European bonds.
This influx of money is the answer to the stability of the euro despite the crisis affecting Greece, Spain, and Portugal.

3. By investing in foreign firms, Chinese banks are trying 1) to internationalize Chinese firms, 2) to provide services to European firms in China, and 3) to empower their capability on the financial market.

4. According to the Economist journalist ..., democratization will fail to bear its fruit in China though the total wealth of the country is increasing enormously.

5. China is not likely to turn into a democracy because of its leading position as an oil-exporting country, its large land area, and its tradition of very large party state.

6. One of the reasons for its political stability is its ability to carry out long-term, stable political successions. Actually, the recruitment of new cadres has so far averted episodes of nepotism.