Zhutian: I Am Offering Online Classes in Wanjie

Because of the virus outbreak, Lin Feng can only stay at home and take online classes. The Zhutian online course system was accidentally activated. Countless talents from heaven and earth, gods, demons and monsters have received notices of online classes. Lin Feng: "Complete the lessons and tests, and you can get the power of the universe." Xiao Yan: "Teacher Lin, I feel sleepy as soon as I start math class!!" Nezha: "I want to make 10 dishes!" Wang Chengkun: "Humph, my son Wang Teng has the qualifications of a great emperor, so 10 questions are nothing! My son Wang Teng can do 100 questions!" Li Jing: "100 steps? My son Nezha can do 1,000 steps!" Li Shimin: Teacher Lin, I seem to be a little confused. What is this ab=cd? Li Chengqian: Father, you are out. This is an equal-area formula. ……… This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.