Unit 1: The core principles of Chemistry (化学的核心原理)
Unit 2: Application of Core principles of Chemistry (化学核心原理的应用) Unit 4: Rates, equlibiria and further organic chemistry (反应速率,反应平衡和有机化学) Unit 5: Transition metals, arenes and organic nitrogen chemistry (过渡金属,芳香烃和有机氮化学)