Can Cultivating an Immortal Emperor Make Him Invincible?

Lin Qingxuan became emperor in another world and returned to earth just in time for the college entrance examination. In order to carry forward his mother's legacy, he planned to get the top score in the college entrance examination for fun. The college entrance examination is in two months. Is it still too late to study now? This year's college entrance examination questions are said to be of epic difficulty? Sorry, these are just childish in front of me, because I am a genius. Cultivation? I don't practice immortality because I am the Immortal Emperor. Do I still need to practice?