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Value investment = an undervalued company that finds and holds sustainable profitability for a long time.

Fool wisdom = value investment+main thinking!Value investment = an undervalued company that finds and holds sustainable profitability for a long time.Main thinking = buying and selling logic, following the main capital movements to control positions.

Investment is the process of recognizing "economy, policy, value, main force, cycle, mood, position and trust". Fear comes from the unknown, and greed comes from want.