I have tried to use DIY method such as using fresh egg white to cover my face and let it dry, then wash it thoroughly with water. Sometimes, I will use some purifying gel to cover my face (Origxx, Kiexx) for about 10 minutes and wash it with water, the effect is good. Also, I have tried to use steam (when I am taking a shower with warm water to make the holes expand and use 磨砂膏 for sensitive skin (I have sensitive and 混合性 skin) to try to rub it gently. I don't know whether it is suitable for you, just for your reference only.
Supplementary notes: all DIY methods that I have mentioned in my previous message is about removing black heads, for minimizing holes on nose I think essence must be used. However, I still have not found any essence that has very good effect and I hope somebody can give advice for this. Thanks in advance.