What is the episode in which Gan Long loses to a nine-year-old child?

The first episode. According to the plot of the TV series Nine-year-old County Grandfather, it was in the first episode that Gan Long lost to a nine-year-old child. Chen Wenjie went out to play with the beads he had just met. He didn't want to meet Gan Long who went out of the palace incognito to see the exam. Chen Wenjie casually carried a pair to Gan Long, which definitely stumped one, and Gan Long gave him the title of new champion. Nine-year-old County Grandfather was directed by Huang Haigang and starred by Cao Jun and Ashton Chen. It mainly tells the story of a nine-year-old child, Chen Wenjie, who became the magistrate of ten counties by chance and stayed away from bullying and punishing corrupt officials in ten counties.