In Dream of the Red Chamber, there were many reasons why the four great clans were raided. The specific reasons were as follows: The reason why the Jia family was raided was mainly because the accumulation of wealth had reached a very large level. Poor management and the greed of the family members were the main reasons for the decline of the family. 2. The reason why the Xue family was raided: The Xue family was raided mainly because of its excessive accumulation of wealth, the greed of the family members, and poor management. 3. The reason why the Wang family was raided: The Wang family was raided mainly because of its wealth accumulation and the greed of the family members. 4. The reasons for the shakedown of a historian's family: The main reasons for the shakedown of a historian's family were the accumulation of wealth, the greed of family members, and poor management.