Traveling Back to Ancient Times to Take the Imperial Examination

'''The modern-day orphan Cheng Xuyan, who died from illness, transmigrated to ancient times. This time, he had both parents alive and many siblings. Yet, at the age of seven, he was adopted by a clansman. His adoptive father was often in a daze, only occasionally lucid. During those rare moments of clarity, he would grab Cheng Xuyan and teach him a few characters. *Ding! Era-specific script detected. Learning system activated. Will the host proceed?* Cheng Xuyan immediately agreed. At first, Cheng Xuyan thought studying the Four Books and Five Classics under the system and pursuing the imperial examinations was already incredibly fortunate. Gradually, he realized he had undere...