Xiao Shenyang plays a young couple in a teahouse. Which episode is it?

18 episode. According to the plot information of "Ji Xiaolan 4 with Iron Teeth and Copper Teeth", in episode 18, Gan Long, Ji Xiaolan and Xiao Shenyang in Chunyuan Building opened their eyes and tried to show their skills with the guests, but they drove them out of Chunyuan Building. Gan Long still refused to give up. Ji Xiaolan came up with an idea. Finally, Gan Long turned into a noodle mill, with Shenyang pouring tea and Ji Xiaolan pouring tea.