What episode of ipartment is Master Huang?

Season 4 episode 4. According to the plot of the iQiyi TV series ipartment, in the fourth episode, Master Huang was a master who set up a stall to sell medicinal liquor, claiming that he was not overwhelmed by many skills. Ipartment is an urban youth sitcom produced by Shanghai Film Group Corporation and produced by Shanghai Gog Film and Television Production Co., Ltd., which tells an interesting daily story among a group of tenants living in ipartment.