Han Tzu's father paid Guo-rong to obtain the answers for the International Fleet tests for Battle School aptitude. Guo-rong began to come to the Han household to tutor Tzu in the answers, so that he would know them when he took the test. However, due to the Monitor that Tzu was wearing at all times, the IF knew about this cheating. Thus, after he had taken the test, the next day IF soldiers came to the house to arrest Guo-rong and Tzu's father. However, Guo-rong was not at the house at the time, though he was presumably arrested later.