No, Chou Tomb is not controlled. On the contrary, Chou Tomb controls Xu Tomb.
Secondary school was in LP Bing Xu, age 13-23. The intention of the chart was to control Xu, as said earlier. But in this LP, Xu cannot be controlled, because Xu is produced by Bing. So, this LP runs counter to the natal chart's intention. Therefore, he failed the exam.