China Visa - "Enter Before" stated as 27 Dec 2019. Enter on 26 Dec and back on 29 Dec.

I'm planning to travel China on 26 Dec 2019 for 4 days and will be back on 29 Dec 2019. My existing multiple entry China visa stated "Enter Before" 27 Dec 2019. Is that fine for me to travel China on 26 Dec and return on 29 Dec (after the visa expiry date)? Or do I need to re-apply a new China visa since I'll only be back after the visa expiry date? Kindly advise. Thank you.