Hi I am from Philippines, I have 10 visa stickers in my passport, but the last one was expired,

I want to go back China even 5 days to get my things and withdraw the remittance that was sent in my bank of China account, I also need to attend some business meeting I have invitation letter from our supplier with the chinese government stamp, is this what we called the invitation letter with confirmation from the government, I don't have hotel booking but I can stay hotel near Louho border upon arrival, I only have roundtrip ticket but my return flight to philippines will be on Nov 22, because I need to stay HK after China and go to Macau. Please advice if this is ok.

Thank you,