First of all, the family to which the Seventh Young Master belongs faces the problems of internal struggle and power distribution. These family struggles led to contradictions and struggles among family members, and the Seventh Young Master was also involved. Long-term struggle and pressure may lead to the gradual deterioration of his mental state.
Secondly, the seventh young master lost his beloved, which was a great blow to him. Losing loved ones often has a serious impact on a person's mental health. For the Seventh Young Master, this loss undoubtedly aggravated his psychological pain and depression, which eventually led to his mental breakdown.
In addition, the seven young masters also experienced a series of difficult and painful experiences in the play. These experiences may include physical and mental torture, unbearable pressure, betrayal and so on. These factors may have a negative impact on a person's mental state, leading to mental illness.
It should be noted that the above answers are based on the plot setting and plot of Yan Shi Ji, which is inferred from the perspective of film and television analysis. The actual situation may be more complicated, depending on the writer's creative setting and the actor's performance.