Which episode is the alternative sex scene between Lin Qiwei and Qiu Ze?

This is the plot of episode 6 of "The Impeccable Master Ru Lin". Ye Rou (played by Qi Wei) is drinking alone in a nightclub. A muscular man comes to chat with her. Thanks to Wei Xiao (played by Qiu Ze), who appears as a hero and rescues her, he saves Ye Rou and sends her home. Unexpectedly, under the influence of alcohol, Ye Rou tricked Wei Xiao into handcuffing him and handcuffed him to the bedside, performing an "alternative sex scene" (pictured below).