Zhou Cheng temporarily lent his pre-marital house to his brother-in-law, but it was subjected to unauthorized renting, marriage fraud, and encroachment. Facing familial emotional blackmail, he did not harm innocent tenants, nor did he use impulse to solve the problem; instead, he secured evidence, recovered the house legally, and made every person who made a mistake bear responsibility. What he guarded was not just a set of houses, but his father's dignity and the bottom line of being a human being. True familial affection is not principleless sacrifice, but mutual respect and clear rights and responsibilities. Kindness must have an edge, and tolerance must also have boundaries.