Data Sources:

1. Biography websites: Wikipedia, Reference for Business, Brooksy, Forbes, etc.

2. Interview transcripts.

3. Posted contents or profiles on CEOs' personal social medias.

4. Profiles of CEOs on company official websites. 

5. Google Search: Use various versions of each CEO's name (sometimes combine with company names), combined with relevant keywords such as "raise", "move", "early-life experience", "childhood", etc. 

Information Screening Criteria:

Our primary focus is on the description of CEOs' relocation experiences before adulthood in the search results. In some cases, there is no explicit information about their pre-adulthood relocation experiences, but this can be inferred using several alternative approaches, such as determining whether they were born, raised, and received their elementary, middle, and high school education in the same region.

Data Sources:

1. Biography websites: Wikipedia, etc.

2. Interview transcripts.

3. Official disclosure from the company. 

4. Related news.

5. Google Search: Use various versions of each CEO's name (sometimes combine with company names), combined with relevant keywords such as "diagnose", "cancer", "health issue", "death", etc. 

Information Screening Criteria:

We primarily focus on the descriptions of health struggle experiences that CEOs have either personally endured or witnessed in close family members within the search results. We define close family members as parents, children, spouses, and siblings.

Data Sources:

Step 1: CEOs' other activities engagement

BoardEx. 

Step 2: Verify whether each organization is charitable

1. Tax-exempt classification check.

2. Organization's official description.

3. Some charitable organization databases, such as Charity Navigator.

Information Screening Criteria:

We primarily collect CEOs' other activities engagement from BoardEx, and further check whether these organizations are charitable manually to identify CEOs' previous and current charitable engagement experience.