He/she can apply some documents from Canada consulate or embassy in China to get admission. It is called "travel documents for PR card expired". Check the immigration website. $ ]0 \& m3 y. V. M, h4 M( [2 O1 P: ?' j& ~3 \5 J9 p/ b) h
By the way, how did he/she apply for the renew? In Canada or outside of Canada? Did he/she apply by themselves or from friend? Thank you.