Time flies by, and in a twinkling of an eye, three months have passed. Summer Chen arrives at Zhilao's residence on time every day to learn ancient Chinese characters. He can learn about thirty characters every day. However, as he masters more and more words, the speed is getting faster and faster. Now three months have passed, and he has mastered about three thousand words.

Of course, 3,000 words are far from the whole of ancient mythology. The whole ancient mythological language has nearly 80,000 words. So many words, of course, need to be studied for a long time. However, it is no longer difficult to master 3,000 characters, communicate...