Pray in Vain

What should I do if I travel through time? It is to dominate the literary world by quoting classics; Or use mathematics, physics and chemistry to build an important weapon for the country and become rich; Or you can immerse yourself in the imperial examinations, be granted the title of marquis and worship the prime minister; But if the person who travels through time is a clear and stupid college student who knows nothing, how can he break through...