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| Variable dimension | Variable name | Proxy | Definition |
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| Dependent variables | Whether block shareholders increase their holdings | SIV | Increased holdings in the current period, recorded as 1; without increased holdings in the current period, recorded as 0 |
| The changes of the increasing holdings of block shareholders | SIQ | The cumulative number of changes in holdings of block shareholders in the current period/total shares |
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| Independent variables | Whether to recognize goodwill | GRV | Added goodwill in this period is recorded as 1; without added goodwill in this period is recorded as 0 |
| Degree of goodwill recognition | GRQ | The added goodwill in this period/total assets |
| Degree of goodwill impairment | GIQ | Provision for goodwill impairment in the current period/total assets |
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| Control variables | Enterprise size | ES | LN (total assets) |
| Operating cash flow | OC | The net cash flow from operating activities/total shares |
| Board of supervisors | BS | The number of supervisory board |
| P/B ratio | PB | Current value of the closing price of the current period/(total value of owner’s equity in the end of this period/the value of paid-in capital for the end of current period) |
| Long-term capital debt ratio | LCD | Total noncurrent liabilities/(total owner’s equity + total noncurrent liabilities) |
| Cost and charge margin | CCM | Total profit/(operating costs + sales expenses + management expenses + financial expenses) |
| Years | Year | Annual dummy variable. When the company is in the year, take 1; otherwise, take 0 |
| Industry | Ind | Industry dummy variables. When the company is in this very industry, take 1; otherwise, take 0 |
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