The theory of building socialism with Chinese characteristics is a rigorous and unified Marxist scientific system. The style of learning that only sees trees, not forests, and even literacy and contextualism, will never reach the realm of building a theory of socialism with Chinese characteristics. What is the view that the above paragraph mainly supports? ['The theory of building socialism with Chinese characteristics is a serious job.', 'This theory can only be created after a comprehensive and systematic study.', 'Must study thoroughly and systematically to grasp the essence of this theory.', 'Mastering the scientific system of Marxism can reach the realm of this theory.']