Excuse me, which episode was Wei Zi's first visit to the palace to see the emperor? What questions did the emperor ask her?

The new Princess of Pearl 18 first met the emperor at about the 43rd minute, which was at the end of the 18 episode. The emperor just noticed Wei Zi, and then episode 19.

At the beginning of episode 19, Wei Zi answered the emperor's five questions. First, the emperor asked the swallow what the four books and five classics were. Swallows can't help it, Wei Zi replied. The four books refer to The Analects of Confucius, Mencius, University and The Doctrine of the Mean. The Five Classics refer to The Book of Songs, Shangshu, Book of Rites, Zhouyi and Chunqiu. Then the emperor asked Wei Zi the second question, who were the eight masters in Tang and Song Dynasties? Wei Zi answered: Han Yu, Liu Zongyuan, Ouyang Xiu, Ceng Gong, Wang Anshi, Su Xun, Su Shi and Su Zhe. The third question, who is the lyricist Li San? Li Bai, Li Yu and Li Qingzhao. The fourth question, who are the four people in Yuanqu? Ma Hanqing, Ma Zhiyuan, Zheng Guangzu, Baipu. The fifth question, who are the big and small Mao Gong? They are two uncles who translated The Book of Songs, Mao Heng and Scapharca subcrenata.