Sixty-year-old only child: The system taught me how to become rich

**How ​​Andrew Carnegie made money:**

Carnegie entered the steel industry, worked his way up the ranks, and eventually founded the Carnegie Steel Company. Through his successful development in the steel industry, he made the company one of the largest steel companies in the world. Eventually, he made a huge fortune by selling the company and donating some of the money to charity.

**How ​​John D. Rockefeller made money:**

Rockefeller entered the oil industry and attempted to gain control of the oil business by eliminating competition. He founded the Standard Oil Company, which controlled most of the oil business in the United States. Later, he further consolidated his control over the oil business by establishing the Standard Oil Trust Company.

**How ​​JP Morgan makes money:**

By training as a banker and lending money to growing businesses, Morgan established JPMorgan Chase Bank, which became one of the largest banks in the United States. He controlled several railroad, electric power, insurance and shipping companies and realized profits by reorganizing and consolidating these businesses. Eventually, he purchased Andrew Carnegie's steel company and grew it into the largest U.S. steel company in the world.

**How ​​Henry Ford made money:**

Ford made his fortune by transforming automobile manufacturing. He founded the Ford Motor Company and introduced assembly line production methods to make automobile manufacturing more efficient. By raising worker wages and setting standards to make cars affordable for workers, he achieved Ford Motor Company's success as one of the largest auto companies in the United States. These entrepreneurs are successful in different industries, but have some things in common:

1. **Entrepreneurial Spirit:** All of these entrepreneurs have demonstrated a strong entrepreneurial spirit and have become industry leaders by building and growing their companies.

2. **Industry field specialization:** Each entrepreneur has chosen a specific industry field, such as steel, oil, finance, and automobiles, and has achieved significant success in this field.

3. **Control and integration:** These entrepreneurs have achieved control over the industrial chain by controlling and integrating key resources or companies in the industry, thus improving efficiency and competitiveness.

4. **Philanthropy:** After earning their vast fortunes, both Carnegie and Morgan devoted themselves to philanthropy, donating millions of dollars to education, medical care, and other social causes.

5. **Innovative methods:** Rockefeller introduced monopoly strategies, Morgan adopted loans and integrated enterprises, and Ford adopted innovative methods such as assembly line production, all in order to improve efficiency and reduce costs.

6. **Wealth Management:** These entrepreneurs are excellent wealth managers and have successfully accumulated large amounts of wealth through investments, integrations and mergers.

Although these entrepreneurs have similarities, each has their own unique approach and strategies for achieving success in different industries.

The basic steps for conducting an oxygen production experiment with potassium permanganate are as follows:

1. **Preparation materials**:

- Potassium permanganate (KMnO?) crystals

- test tube or reaction flask

- Heating device (e.g. alcohol lamp or Bunsen burner)

- Rubber stopper or airtight bottle stopper

- Sink or container

2. **Assembly Equipment**:

-Put an appropriate amount of potassium permanganate crystals into a test tube or reaction bottle

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