How long is confinement ? Is it 28, 30 or 31 days?Is it on day 31 we can start blow fan or need wait

I did 28 days counting from discharge day (day 4 postpartum). main thing is don't touch cold water or even room temperature water , best is to only touch warm water. you can keep a flask of hot water in the toilet to mix to warm water. but please keep hygiene and bathe daily! can use those herbal warm baths and dry your hair & body thoroughly. I was perspiring profusely lol and sat under fan for my #2. but I avoided cold water at all cost and was wearing room slippers to keep my feet warm. attire wise was sleeveless top and shorts lol. I can't sleep in AC room cos of my sinus. I recently went to check tcm, my body constitution is okay, they say my womb is warm which is good for future childbirth, maybe cos my confinement was done well lol.